Plantar fasciitis is one of the common reasons people feel pain, in the heel and foot. This pain is frequently seen in care, podiatry orthopedics, sports medicine and rehabilitation settings.. For many years the ICD‑10‑CM coding for plantar fasciitis was not as specific as many providers would have liked.
That changes in 2026.
Beginning with dates of service on October 1 2026 providers should start using an ICD-10-CM code family that was created specifically for plantar fasciitis. This change allows clinicians to report plantar fasciitis in the foot left foot or an unspecified foot. It replaces the M72.2 code, which previously grouped plantar fasciitis together with plantar fascial fibromatosis.
For practices that often treat heel pain this update is not a small change in coding. It has impact. Diagnosis codes affect necessity, how claims are processed payer edits, clinical reporting and how conditions are recorded across a patient’s medical history.
This guide covers the plantar fasciitis ICD-10 codes for 2026. It explains when these codes become effective how they are different, from the code and what providers should include in their documentation before submitting claims.
What Is the New ICD-10 Code for Plantar Fasciitis in 2026?
Effective October 1, 2026, plantar fasciitis is assigned to the new M67.A0- code family.
The new codes are:
| ICD-10-CM Code | Description |
|---|---|
| M67.A01 | Plantar fasciitis, right foot |
| M67.A02 | Plantar fasciitis, left foot |
| M67.A09 | Plantar fasciitis, unspecified foot |
These codes are included in the FY 2027 ICD-10-CM update even though they start being used in the calendar year 2026. The way the federal fiscal-year is named matters a lot. The FY 2027 ICD-10-CM codes cover services that happen from October 1 2026, to September 30 2027.
That means providers should pay close attention to the date of service, not simply the calendar year.
Quick Coding Rule
When services were provided before October 1 2026 claims must use the FY 2026 ICD‑10‑CM code set. When dates of service occur on. After October 1 2026 the updated laterality‑specific plantar fasciitis codes must be reported. Only report those codes if the clinical documentation clearly supports the side.
A coding principle states that the ICD‑10‑CM code set in effect on the actual date of service should govern claim coding. This rule remains true when a claim is submitted, resubmitted or corrected after a new ICD‑10‑CM code set becomes effective. The date of submission or correction does not alter the code set that applies to the date of service.
Why Was the Plantar Fasciitis ICD-10 Code Changed?
The older coding structure created an important clinical limitation.
Historically, M72.2 was used for plantar fascial fibromatosis and also included plantar fasciitis. These are not the same condition.
Plantar fasciitis is usually an degenerative problem that affects the plantar fascia and is often linked to heel pain.
Plantar fascial fibromatosis, which can be connected to Ledderhose disease involves the formation of nodules or lumps within the plantar fascia.
Even though both conditions involve the plantar fascia they can present differently progress in ways require different treatments and need different long-term care.
The ICD-10 Coordination and Maintenance Committee got a proposal pointing out that using the M72.2 code for both conditions makes it hard to tell them apart and also does not account for whether the issue is, on the left or right side.
The new coding structure addresses both problems.
Providers can now report plantar fasciitis independently and specify whether the condition involves the right or left foot.
What Happened to ICD-10 Code M72.2?
The transition away from M72.2 is one of the most important details for providers to understand.
Under the updated coding structure, plantar fasciitis receives the new M67.A0- family, while plantar fascial fibromatosis receives separate, laterality-specific M72.2 codes.
The updated fibromatosis codes include:
| ICD-10-CM Code | Description |
|---|---|
| M72.20 | Plantar fascial fibromatosis, unspecified foot |
| M72.21 | Plantar fascial fibromatosis, right foot |
| M72.22 | Plantar fascial fibromatosis, left foot |
CMS materials implementing the October 1, 2026 diagnosis-code changes list both the new plantar fasciitis codes and the revised plantar fascial fibromatosis codes.
This separation makes the diagnosis considerably clearer.
Before the Update
A patient with plantar fasciitis could be reported under M72.2 even though the code’s primary classification also involved plantar fascial fibromatosis.
After the Update
Providers can distinguish:
M67.A01-M67.A09 — plantar fasciitis
from
M72.20-M72.22 — plantar fascial fibromatosis
That distinction can improve diagnostic accuracy and reduce ambiguity within the medical record.
Right Foot Plantar Fasciitis ICD-10 Code
For plantar fasciitis involving the right foot, the new code is:
M67.A01 — Plantar fasciitis, right foot
Documentation should clearly identify the right foot.
For example:The patient says they have pain, on the bottom of their heel. The pain is worst when they take the few steps after getting out of bed. When the doctor checked the heel they found tenderness near the inside part of the bottom of the heel. The signs and symptoms match a diagnosis of plantar fasciitis in the foot.
The diagnosis is clearly identified and laterality is documented, supporting M67.A01.
Left Foot Plantar Fasciitis ICD-10 Code
For plantar fasciitis involving the left foot, report:
M67.A02 — Plantar fasciitis, left foot
The same principle applies: the clinical note must show that the condition affects the foot.
Documentation that only writes “plantar fasciitis” may not give detail to support the laterality‑specific code especially when the side is not mentioned elsewhere during the encounter.
Unspecified Plantar Fasciitis ICD-10 Code
When the affected foot truly cannot be determined from the medical record, the new code is:
M67.A09 — Plantar fasciitis, unspecified foot
Although an unspecified code is still available it should not be the default when the side is known.
If the doctor checks the patients foot treats the foot and writes about symptoms on the right side the record should support the diagnosis for the right foot instead of using a code that is not specific.
Good documentation usually makes it easier to connect the diagnosis the treatment and the claim together.
What About Bilateral Plantar Fasciitis?
The new code family includes codes for the right foot and the left foot instead of using one code that covers both feet at the same time.
When plantar fasciitis is diagnosed in both feet healthcare providers should usually report the code for the right foot and the correct code, for the left foot:
M67.A01 — Plantar fasciitis, right foot
and
M67.A02 — Plantar fasciitis, left foot
The documentation should make the bilateral diagnosis clear.
Payer‑specific billing rules must still be reviewed whenever procedures are performed on both sides. This is because diagnosis coding and procedure modifier requirements are issues.
Understanding Plantar Fasciitis From a Clinical Documentation Perspective
Accurate coding starts with a clear clinical record.
Plantar fasciitis often brings pain beneath the heel. The pain can spread to the inner side of the foot. People usually feel this pain when they take their few steps after waking up or after they have been seated for a while.
The pain may lift when movement begins. It can come back or get worse after standing for a long time walking or engaging in other activities.
Documentation does not have to be overly detailed to support the ICD‑10 code. It should simply state the reason, for the diagnosis. Clearly show which foot is affected.
A useful plantar fasciitis note may document:
- affected foot
- location of pain
- symptom duration
- first-step or post-rest pain
- tenderness on examination
- aggravating activities
- relevant biomechanical findings
- conservative treatments attempted
- response to previous treatment
- associated conditions when clinically relevant
The level of detail should reflect the patient’s actual evaluation rather than being added solely for billing purposes.
Plantar Fasciitis vs. Plantar Fascial Fibromatosis
The 2026 update makes understanding this distinction particularly important.
Plantar Fasciitis
Plantar fasciitis commonly produces heel pain associated with irritation or degeneration around the plantar fascia, often near its calcaneal attachment.
Patients frequently describe pain with:
- first steps in the morning
- standing after rest
- prolonged walking
- running
- extended weight-bearing
Treatment may involve stretching, changing activities, choosing shoes using orthotics doing physical therapy taking medications getting injections or other procedures depending on the patients condition. Treatment is tailored to the patients condition.
Plantar Fascial Fibromatosis
Plantar fascial fibromatosis is a condition where non-cancerous fibrous lumps develop inside the plantar fascia.
Patients might say they feel a lump or bump in the middle of the foot. This is different, from the heel pain that happens with plantar fasciitis.
With the structure these two conditions should not be considered the same when it comes to coding.
| Condition | 2026-2027 ICD-10-CM Family |
|---|---|
| Plantar fasciitis | M67.A0- |
| Plantar fascial fibromatosis | M72.2- |
This increased diagnostic separation was one of the reasons behind the coding proposal.
Common CPT Codes Associated With Plantar Fasciitis Treatment
ICD-10-CM codes describe the patient’s diagnosis. CPT and HCPCS codes describe services, procedures, and certain supplies provided during treatment.
The appropriate procedure code depends entirely on what was actually performed.
Some codes that may appear in plantar fasciitis encounters include:
| CPT Code | Common Use |
|---|---|
| 99202-99205 | New patient office/outpatient E/M services, depending on documented level |
| 99211-99215 | Established patient office/outpatient E/M services, depending on documented level |
| 20550 | Injection of single tendon sheath, or ligament/aponeurosis |
| 20551 | Injection involving a single tendon origin/insertion |
| 73620 | Foot radiographs, two views |
| 73630 | Foot radiographs, complete, minimum three views |
| 76882 | Limited nonvascular extremity ultrasound when requirements are met |
| 97110 | Therapeutic exercises |
| 97140 | Manual therapy techniques |
| 29893 | Endoscopic plantar fasciotomy |
Not every code listed above will be appropriate for every plantar fasciitis encounter.
The procedure performed, anatomical structure treated, documentation, payer policy, supervision requirements, and medical necessity must all support the code selected.
Providers should avoid choosing a CPT code simply because it is commonly associated with plantar fasciitis.
Plantar Fasciitis Injection Coding
Corticosteroid injections or other medical treatments that are needed may be used for some patients if the usual care has not helped enough.
When it comes to injection coding it is important to pay attention because the right CPT code depends on which part of the body is being treated and what exactly was done during the procedure.
For example CPT codes between 20550 and 20551 could apply to injections that are given to tendon sheaths, ligaments or the areas where tendons attach to bones.
CMS Medicare coverage guidelines also link some injections, for tendons and ligaments to diagnosis codes. These codes can change when the new ICD-10 codes come out each year. One CMS document specifically mentions that starting on October 1 2026 the codes M67.A01 and M67.A02 will be added to show the way of coding plantar fasciitis.
Practices should therefore confirm:
- what structure was injected
- anatomical site
- right or left side
- medication administered
- dosage
- route
- imaging guidance, when applicable
- medical necessity
- prior conservative treatment when required
- payer coverage policy
The diagnosis code does not automatically establish coverage for the procedure.
HCPCS Codes and Drug Billing
When a medication is administered during an office procedure, a separate HCPCS drug code may sometimes be reportable in addition to the injection procedure.
The correct HCPCS code depends on the actual drug, formulation, concentration, and amount administered.
The medical record should document the medication clearly rather than relying on a generic statement such as “steroid injection given.”
Drug documentation may need to include:
Drug name: the actual medication administered.
Dose: the quantity given to the patient.
Route: how the medication was administered.
Site: the anatomical location treated.
Laterality: right or left when applicable.
Units billed: consistent with the HCPCS code’s unit definition.
Drug wastage and applicable modifiers should also follow current CMS or payer-specific policies when relevant.
Does the New ICD-10 Code Change CPT Coding?
Not directly.
The new plantar fasciitis ICD-10 codes change how the diagnosis is reported. They do not automatically change the CPT code for a procedure.
For example, if the physician performs an injection that remains properly described by a particular CPT code, the procedure code does not change simply because the plantar fasciitis diagnosis moved from M72.2 to M67.A01 or M67.A02.
What does change is the diagnosis linked to that procedure.
This is why practices should update more than their diagnosis-code lists. They should also review:
- charge capture tools
- EHR favorites
- claim-editing rules
- superbills
- order sets
- authorization templates
- medical-necessity mappings
- payer-specific edits
- internal coding references
A code saved as a favorite from the old system can easily continue appearing on claims unless templates are updated.
Modifiers Commonly Seen in Plantar Fasciitis Claims
Modifiers apply to procedures rather than diagnosis codes and should only be used when the circumstances of the service meet the modifier’s requirements.
Depending on the procedure and payer, relevant modifiers may include:
RT — Right Side
May be used to indicate a procedure performed on the right foot when required by the payer.
LT — Left Side
May indicate a procedure performed on the left foot.
50 — Bilateral Procedure
May apply to eligible procedures performed bilaterally, depending on the CPT code and payer rules.
Not every payer processes bilateral services in the same way. Some may prefer modifier 50, while others may require separate claim lines with RT and LT.
25 — Significant, Separately Identifiable E/M Service
Modifier 25 can be used when there is an clear E/M service done on the same day as a minor procedure. The records must show work that’s more, than the usual pre and post procedure checks.
A diagnosis alone does not justify modifier 25.
59 — Distinct Procedural Service
Modifier 59 may be needed in some cases when procedures that are usually grouped together are actually separate. The records must show that the procedures are different and follow the rules.
It should never be added simply to force payment through a claim edit.
Medical Necessity and Payer Coverage
Using the correct ICD-10 code is only one component of a payable claim.
Payers may maintain policies governing:
- injections
- physical therapy
- imaging
- orthotics
- extracorporeal shock-wave therapy
- surgery
- ultrasound guidance
- frequency limitations
- conservative treatment requirements
For Medicare patients in particular, practices should review the applicable National Coverage Determination, Local Coverage Determination, and associated billing and coding article when relevant.
CMS has already begun incorporating the new plantar fasciitis diagnosis codes into Medicare coverage articles with October 1, 2026 effective dates.
A code appearing in a medical-necessity list also does not guarantee payment. All applicable clinical and coverage criteria must still be satisfied.
Common Plantar Fasciitis Claim Problems After the 2026 Update
Whenever ICD-10 codes change, practices face a transition period in which old templates, payer systems, and coding habits can create preventable errors.
Using M72.2 for New Dates of Service
One of the biggest potential problems is continuing to use the old M72.2 coding approach after the new codes become effective.
For services on or after October 1, 2026, practices should verify that the current ICD-10-CM code set is being used.
Missing Laterality
A physician may clearly know that the patient has right-foot plantar fasciitis but document only “plantar fasciitis.”
That can force coding staff to use an unspecified option when the information cannot otherwise be supported from the medical record.
Adding the affected side to the assessment is a simple improvement.
Diagnosis and Procedure Laterality Do Not Match
A claim may report:
M67.A01 — right foot
while the procedure line indicates:
LT — left side
Such inconsistencies can trigger claim edits or require additional review.
The clinical documentation, diagnosis code, procedure code, and modifier should tell the same story.
Confusing Plantar Fasciitis With Fibromatosis
This issue becomes especially important after October 1, 2026 because the conditions now have distinct coding pathways.
Providers should diagnose the condition actually present rather than treating the two terms as interchangeable.
Using an Unspecified Code Despite Clear Documentation
If the clinical record clearly states right-foot plantar fasciitis, M67.A09 should generally not replace the more specific M67.A01 simply because the unspecified code appears first in an EHR search.
Outdated EHR Favorites
Many providers rely heavily on favorite-code lists.
If M72.2 remains saved under “plantar fasciitis,” outdated coding can continue long after the change becomes effective.
EHR dictionaries should be reviewed before the October 1 transition.
Example 1: Right-Foot Plantar Fasciitis
A 52-year-old patient reports several months of right plantar heel pain. Symptoms are most severe during the first steps in the morning and after periods of inactivity. Examination reveals tenderness over the plantar medial heel. The provider diagnoses right-foot plantar fasciitis.
For a qualifying date of service on or after October 1, 2026:
ICD-10-CM: M67.A01
The provider should then report any separately performed services using the appropriate CPT or HCPCS codes supported by the encounter.
Example 2: Left-Foot Plantar Fasciitis
A patient presents with left heel pain associated with prolonged standing at work. The provider documents tenderness along the proximal plantar fascia and diagnoses plantar fasciitis of the left foot.
The diagnosis code is:
M67.A02 — Plantar fasciitis, left foot
There is no reason to use the unspecified-foot code because the documentation clearly establishes laterality.
Example 3: Bilateral Plantar Fasciitis
A runner complains of plantar heel pain in both feet. Following examination, the physician documents bilateral plantar fasciitis.
Coding would generally include:
M67.A01 — Plantar fasciitis, right foot
M67.A02 — Plantar fasciitis, left foot
Any procedures performed on both feet would require separate review of the applicable CPT and payer modifier requirements.
Example 4: Plantar Fibromatosis Is Not Plantar Fasciitis
A patient presents with a palpable firm nodule within the plantar arch rather than classic plantar heel pain. The physician diagnoses plantar fascial fibromatosis of the right foot.
This should not be reported as right-foot plantar fasciitis.
The appropriate diagnosis under the new structure is:
M72.21 — Plantar fascial fibromatosis, right foot
The new coding system allows these clinically different disorders to be represented separately.
What Providers Should Update Before October 1, 2026
The safest approach is to prepare before the new code set becomes active.
Practices treating plantar fasciitis should review their systems for references to M72.2 and identify anywhere the code has been automatically connected with plantar fasciitis.
This may include EHR diagnosis favorites, encounter templates, superbills, procedure templates, pre authorization workflows, internal coding sheets, and claim-scrubbing software.
Clinical teams should also be reminded to document the affected foot.
A simple assessment such as:
“Plantar fasciitis — right foot”
is far more useful for coding than:
“Heel pain / plantar fasciitis.”
For organizations managing a large volume of podiatry or musculoskeletal claims, working with an experienced revenue cycle partner such as Philadelphia Medical Billing can also help practices update diagnosis mappings and identify claim workflows that still rely on the previous M72.2 structure.
Why Laterality Matters More Under the New Code Set
Laterality has become a central part of plantar fasciitis diagnosis coding.
Previously, M72.2 did not distinguish right from left. The 2026 change provides that specificity.
That means providers should make laterality part of the routine documentation process.
Instead of:
Assessment: Plantar fasciitis
consider:
Assessment: Plantar fasciitis, left foot
when clinically accurate.
This may seem like a small documentation change, but it creates stronger alignment between the medical record, ICD-10 diagnosis, procedure modifier, imaging order, therapy referral, and claim.
Can Providers Still Use M79.671 or M79.672 for Foot Pain?
Pain codes may still be appropriate when the provider has not established a definitive diagnosis and the coding rules allow the symptom to be reported.
Examples include:
M79.671 — Pain in right foot
M79.672 — Pain in left foot
However, when plantar fasciitis has been definitively diagnosed, coding should generally reflect the established condition rather than replacing it with a nonspecific pain code merely because the pain code seems easier to bill.
Whether an additional symptom code should be reported depends on the circumstances, official coding guidance, documentation, and whether the symptom is integral to the confirmed condition.
Is a Calcaneal Spur the Same as Plantar Fasciitis?
No.
A calcaneal spur and plantar fasciitis are separate diagnoses, although they may occur in the same patient.
Heel spur codes include options within M77.3-, with laterality determined by the documented condition.
Providers should not automatically report a heel spur simply because a patient has plantar fasciitis.
If imaging identifies a calcaneal spur and the provider establishes it as a relevant diagnosis, it may be separately reportable when appropriate.
The documentation should support both conditions.
The Role of Imaging
Plantar fasciitis is often diagnosed clinically. Imaging may be used when symptoms are atypical, persistent, severe, or when another condition is suspected.
Depending on the circumstances, imaging may help assess for:
- fracture
- heel spur
- soft-tissue abnormalities
- plantar fascia changes
- masses
- other causes of heel pain
Radiographs, ultrasound, or other imaging services should not be ordered solely because a diagnosis code exists. Medical necessity should be based on the patient’s condition and the information needed for clinical management.
How the New Code May Affect Authorizations
Diagnosis-code changes can sometimes create temporary authorization problems.
For example, an authorization obtained before October 1 may contain M72.2, while a service performed after October 1 requires an updated diagnosis code.
Practices should review payer instructions for authorizations that cross the annual ICD-10 implementation date.
It may be necessary to update:
- authorization requests
- referrals
- therapy plans of care
- recurring treatment records
- procedure orders
- precertification information
Do not assume every payer’s system will automatically translate an older code to its replacement.
How the 2026 Change Can Affect Claim Denials
Potential denial reasons following an annual ICD-10 update may include:
Invalid Diagnosis Code
An older code may no longer be valid for the date of service.
Diagnosis Inconsistent With Procedure
The diagnosis may not appear on a payer’s medical-necessity list for the reported procedure.
Laterality Conflict
The ICD-10 code may indicate the right foot while the procedure modifier or documentation indicates the left.
Authorization Mismatch
The code on the claim may differ from the diagnosis originally authorized.
Medical Necessity
The diagnosis may be valid, but payer criteria for the procedure may not have been met.
Missing Documentation
A payer may request supporting records showing the history, examination, failed conservative treatment, procedure details, or other coverage requirements.
The correct response depends on the actual denial rather than automatically changing codes and resubmitting the claim.
Plantar Fasciitis ICD-10 Coding Checklist for Providers
Before finalizing a plantar fasciitis encounter, confirm that the record identifies:
Diagnosis: Is plantar fasciitis clearly established?
Laterality: Right, left, or genuinely unspecified?
Date of service: Which ICD-10-CM code set applies?
Procedure: Is the CPT code consistent with what was actually performed?
Procedure laterality: Does RT, LT, or another applicable modifier match the diagnosis?
Medication: If an injection was administered, are drug name and dose documented?
Medical necessity: Does the record explain why the treatment was reasonable?
Authorization: Was authorization required, and does the diagnosis match?
Payer policy: Are frequency or coverage requirements applicable?
These simple checks can prevent many avoidable claim corrections.
Final Takeaway
The 2026 plantar fasciitis ICD-10 update gives providers something the previous coding system lacked: a dedicated diagnosis family with right- and left-foot specificity.
Starting October 1, 2026, the key codes are:
M67.A01 — Plantar fasciitis, right foot
M67.A02 — Plantar fasciitis, left foot
M67.A09 — Plantar fasciitis, unspecified foot
Meanwhile, plantar fascial fibromatosis moves into its own laterality-specific M72.20-M72.22 structure.
For physicians, podiatrists, therapists, and other healthcare providers, the most important operational change is simple: document laterality and use the code set valid for the patient’s date of service.
Practices should also update old templates, diagnosis favorites, authorization workflows, and claim edits before the October transition. If those systems are not updated, an otherwise accurate clinical encounter can still produce an incorrect claim.
For practices that need help adapting their coding and revenue-cycle processes to annual ICD-10 changes, Philadelphia Medical Billing can support accurate claim workflows while helping providers keep diagnosis coding aligned with current payer and documentation requirements.
The new codes ultimately provide a clearer way to represent a condition providers diagnose every day—and that added specificity should improve both clinical records and claims when it is implemented correctly.
Frequently Asked Questions About the New Plantar Fasciitis ICD-10 Code
What is the new ICD-10 code for plantar fasciitis in 2026?
For services on or after October 1, 2026, the new codes are M67.A01 for right-foot plantar fasciitis, M67.A02 for left-foot plantar fasciitis, and M67.A09 for unspecified-foot plantar fasciitis.
When do the new plantar fasciitis codes become effective?
The codes become effective October 1, 2026, as part of the FY 2027 ICD-10-CM update.
Is M72.2 still the plantar fasciitis code?
The previous coding structure associated plantar fasciitis with M72.2. Beginning October 1, 2026, plantar fasciitis moves to the M67.A0- family, while plantar fascial fibromatosis is represented by M72.20, M72.21, and M72.22.
What is the ICD-10 code for right-foot plantar fasciitis?
The new code is M67.A01.
What is the ICD-10 code for left-foot plantar fasciitis?
The new code is M67.A02.
What is the ICD-10 code for bilateral plantar fasciitis?
There is no single bilateral code in the new family. When both feet are affected and documented, report M67.A01 for the right foot and M67.A02 for the left foot.
What is the unspecified plantar fasciitis code?
The new unspecified-foot code is M67.A09.
Are plantar fasciitis and plantar fibromatosis the same condition?
No. They are distinct conditions. The 2026 update specifically separates their ICD-10-CM coding, making it easier to distinguish plantar fasciitis from plantar fascial fibromatosis.