Plantar fasciitis has a new ICD-10-CM coding structure beginning October 1, 2026. For podiatrists, this change matters because plantar fasciitis is now reported with dedicated diagnosis codes that identify the affected foot. The new codes are M67.A01 for the right foot, M67.A02 for the left foot, and M67.A09 for an unspecified foot.
The update also changes how providers should think about the previous use of M72.2. Plantar fasciitis is no longer an inclusion term under the plantar fascial fibromatosis category. At the same time, plantar fascial fibromatosis has its own laterality-specific codes.
This is not just a change in code-book literature to podiatry practices. Selecting the diagnosis impacts claim accuracy, necessity of procedures, documentation, payer edits, and reimbursement. Failure to switch to the current coding methodology as of the effective date will result in avoidable claim trouble.
This article reviews the new plantar fasciitis ICD-10 code and documentation requirements, billing mistakes, and the implications of the changes for the podiatrists.
What Changed for Plantar Fasciitis in 2026?
Note: The notable date is October 1, 2026. CMS explains that the ICD-10-CM code files that are valid on October 1, 2026, are for patient encounters that occur during October 1, 2026 to September 30, 2027. These files are definitely the FY 2027 ICD-10-CM files, but as the majority of providers and billing groups know, they are the 2026 ICD-10-CM files since they are used during calendar year 2026.
The plantar fasciitis change disassociates the diagnosis from plantar fascial fibromatosis and adds specific codes based on side.
The new structure includes:
| ICD-10-CM Code | Diagnosis |
| M67.A01 | Plantar fasciitis, right foot |
| M67.A02 | Plantar fasciitis, left foot |
| M67.A09 | Plantar fasciitis, unspecified foot |
CMS lists all three codes with an October 1, 2026 effective date.
CMS provides the official 2027 ICD-10-CM files for encounters from October 1, 2026, through September 30, 2027, including the updated code tables and coding guidelines.
From the podiatrists’ perspective, the bottom line is straightforward: The diagnosis described in the medical record should match the new plantar fasciitis code assigned to the claim.
New Plantar Fasciitis ICD-10 Codes Explained
M67.A01: Plantar Fasciitis, Right Foot
M67.A01 identifies plantar fasciitis affecting the right foot.
If right-sided plantar fasciitis is found, the claim is required to have the laterality listed as documented. Laterality is documented by the provider and is evident from the documentation of the history, exam, plan of care, or other documentation.
Be sure to choose a specific diagnosis even if the provider has listed the right foot with no other details. More detail will lead to more commonality between the visit note and the claim.
M67.A02: Plantar Fasciitis, Left Foot
M67.A02 is used for plantar fasciitis involving the left foot.
Similar to the right-foot code, the records should establish that the left foot is impacted. Podiatry offices need to be certain that the laterality documented in the note follows through the charge entry and final claim.
It’s especially relevant to practices that treat both feet or recurring problems where the side being treated may change during different visits.
M67.A09: Plantar Fasciitis, Unspecified Foot
M67.A09 identifies plantar fasciitis when the affected foot is unspecified.
But unspecified coding should not become the default just because the coding process is quicker that way. With documentation indicating right or left foot, the more specific code should usually be assigned.
The preferred method is to correct the documentation and coding process so that the unspecified code is used only when the clinical record does not actually indicate laterality.
Is M72.2 Still the Plantar Fasciitis Code?
This is one of the biggest questions surrounding the 2026 update.
In the past, the association was easy for both providers and coders when they saw M72.2 – plantar fascial fibromatosis. Not anymore. Podiatry coding reference state that plantar fasciitis has been removed as an inclusion term under M72.2.
This difference is significant because those terms are not exactly interchangeable – that “fasciitis” is not ” Fasciitis”.
The updated M72.2 family now distinguishes plantar fascial fibromatosis by foot:
- M72.20 – plantar fascial fibromatosis, unspecified foot
- M72.21 – plantar fascial fibromatosis, right foot
- M72.22 – plantar fascial fibromatosis, left foot
CMS’s current code set lists these codes separately from the new plantar fasciitis codes.
Therefore, coders should not automatically replace every M72.2-related diagnosis with a plantar fasciitis code. The provider’s actual diagnosis must drive code selection.
How Podiatrists Should Approach Code Selection
Accurate plantar fasciitis diagnosis coding starts with the provider’s documentation rather than the coder’s assumption.
Before submitting a claim, the billing workflow should answer several questions:
- What condition did the provider diagnose?
- Does the documentation support plantar fasciitis?
- Which foot is affected?
- Does the diagnosis match the treatment performed?
- Does the selected ICD-10-CM code correspond to the encounter date?
- Does the payer require any additional documentation or medical-necessity information?
Current lists of the ICD-10-CM diagnosis codes (groups) can be used for visits starting on or after Oct. 1, 2026, and practices are no longer required to check a list of diagnosis-codes. Current code sets, addenda, conversion files, and coding rules are created by CMS for every update.
The same documentation principles become particularly important when podiatry practices handle wound-related conditions, where wound care billing may involve additional procedure, diagnosis, and medical-necessity considerations.
Documentation Matters More Than Ever
A new code will not get rid of good clinical documentation.
This is why accurate medical coding remains essential to connecting provider documentation with claim submission and reimbursement.
For plantar fasciitis, documentation must help establish the foot as the site of pathology. History, Exam, Functional Limitation, Evaluation & Management and Response to Treatment is helpful.
A useful documentation workflow should make it easy to determine:
- Which foot is affected
- Why the patient is being treated
- What findings support the diagnosis
- What treatment is medically necessary
- Whether the condition is unilateral or bilateral
- What services were performed during the encounter
All clinical information in the record and the claim should match.
For example, when an assessment states “right plantar fasciitis,” but the claim presents an unspecified-foot diagnosis, the discrepancy may be an unnecessary source of confusion for a claim’s reviewer.
Common Plantar Fasciitis Coding Errors
Final check: The medical record, diagnosis selection, claim details, and payer requirements should tell the same story.
Continuing to Use an Outdated Coding Approach
The most challenging area posts an ICD-10 implementation is documented to be reliance on obsolete code sheets, superbills, templates, or EHR favorites.
Code from a previous workflow has been known to be an invalid diagnosis structure after October 1, 2026.
Practices need to audit changes and review coding references to implementation date. They need to check that current codes have been added to diagnosis pick-lists within the EHR.
Regular review of medical coding and documentation can help practices identify discrepancies before they lead to repeated claim denials.
Ignoring Laterality
Additional codes for plantar fasciitis by side- right, left, other.
Coding guidelines agree that coders should not leave out a side if the provider has documented the side.
For example, laterality errors may create inconsistencies between the clinical note, diagnosis selection and claim.
Confusing Plantar Fasciitis with Plantar Fascial Fibromatosis
The new code structure makes this distinction especially important.
The diagnosis number should not be determined by the fact that both conditions have the plantar fascia. The documentation of the provider’s diagnosis is what guides you as to the appropriate category of the ICD-10-CM.
Using an Unspecified Code When Specific Information Exists
Unspecified codes would be suitable when the record is truly missing this information. This should not be a quick fix after laterality has been documented.
It may indicate the level of coding to an unspecified diagnosis and whether record details support a more specific selection.
Failing to Update EHR Templates
An EHR may keep displaying previous codes unless the practice updates the diagnosis library.
Which may lead to coding errors being repeated even if the provider’s documentation is accurate.
Podiatry practices should review:
- EHR favorites
- Diagnosis pick lists
- Superbills
- Charge-entry templates
- Coding reference sheets
- Internal billing policies
- Staff training materials
How the Change Can Affect Podiatry Billing
ICD-10 coding is connected to the larger revenue cycle, which is why medical billing services in Rhode Island should integrate accurate diagnosis coding with claim submission, payer requirements, and denial follow-up.
Incorrect diagnosis coding can contribute to:
- Claim rejections
- Claim denials
- Medical-necessity questions
- Manual payer review
- Payment delays
- Additional staff rework
- Incorrect reporting
In essence, the medical billing process in a podiatry office has become much more. There is no more a code followed by documentation which is followed by payer policy which ultimately results in claim scrubbing & denial management.
A practice may provide the correct clinical service, yet errors during the encounter can still cause billing errors on the claim.
A Better Workflow for 2026 Plantar Fasciitis Claims
A practical workflow can help reduce avoidable errors.
Step 1: Confirm the encounter date.
Confirm which set of ICD-10-CM codes applies to the date of service. The CDC’s FY 2027 ICD-10-CM release states that these codes should be used for healthcare services provided from October 1, 2026, through September 30, 2027.
Step 2: Review the provider diagnosis.
Determine if the record indicates the plantar fasciitis or more general diagnosis of a different condition of the plantar fascia.
Step 3: Confirm laterality.
Seek up front, left, or possibly without question unnamed very own papers.
Step 4: Select the appropriate diagnosis.
Enter the ICD-10-CM code to effect at the time of a service for the problem that is documented.
Step 5: Compare diagnosis and treatment.
Ensure that the services for which bill is submitted have a clinical relevance to the said diagnosis and to the course of a treatment.
Step 6: Scrub the claim.
Examine diagnosis, CPT/HCPCS codes, modifiers, payer guidelines, and also other claim aspects prior to filing.
Step 7: Monitor denials.
If the claim start to deny after the update, look to see if it’s a related to the code, payer edits, documentation, or maybe a different claims element.
When Podiatry Practices Should Review Their Billing Processes
The 2026 update is a good reason to conduct a focused coding review.
You may not need to restart from scratch on your entire revenue cycle. Instead, work on the sections that will be impacted the most, such as the following:
- High-volume diagnoses
- Frequently used foot and ankle codes
- EHR diagnosis lists
- Podiatry superbills
- Claim-edit rules
- Payer-specific requirements
- Denial reports
- Staff coding references
This type of audit could identify issues before they recur in later claims for submission.
Further, for practices that outsource their coding services, communicate practice changes with the coding team and compare it to current CMS files.
Why Rhode Island Podiatrists Should Pay Attention
Podiatry Practices Podiatry practices in RI are subject to the same ICD-10-CM mandates as practices elsewhere in the country; your revenue-cycle process, however, might be comprised of a range of Medicare, Medicaid, commercial, workers’ compensation, and additional payers.
Using a tailored method can be used to ensure diagnosis coding, submitting claims and payor follow-up are consistent.
Rhode Island Medical Billing’s live Podiatry Billing Services webpage highlights availability for podiatry coding, claims, payer requirements, foot and ankle procedures, wound care, orthotics, and other podiatry service.
For practices with a wider scope of needs, the business also offers medical coding services for podiatry and other practices.
How Outsourced Podiatry Billing Can Help
A small billing team and a large number of in-house coding changes. An increase in coding changes can be a real pain for a team that’s already small. Reaching out to a third-party can help you find someone who is accustomed to changes in coding, claim audits, and appeals.
Useful commercial-intent services for a podiatry practice include:
- Podiatry billing services
- Podiatry coding services
- Podiatry medical billing
- Podiatry revenue cycle management
- Claim submission and follow-up
- Denial management
- Accounts receivable follow-up
- Medical credentialing
The goal isn’t just to send in more claims. The aim is to create a billing process in which all steps–documentation, coding, claim, payer response and payment–are connected.
Effective accounts receivable management is equally important because unresolved denials and unpaid claims can continue to affect a podiatry practice even after the initial billing issue has been corrected.
Final Thoughts
The 2026 plantar fasciitis ICD-10 update, that helps to provide even more pinpointed diagnosis for the podiatrists. As of October 1, 2026 the plantar fasciitis ICD is the following: M67.A01, M67.A02 or M67.A09; depending on which foot is affected.
Practices should also start considering how they will make the differentiation between plantar fasciitis and plantar fascial fibromatosis. Practices can get ready for this transition by updating diagnosis groups on EHRs, reviewing documentation, educating coders and watching for denials.
For Rhode Island podiatry practices, accurate diagnosis coding is only one part of maintaining a healthy revenue cycle. Working with the best medical billing company in Rhode Island can help connect documentation, coding, clean claim submission, denial management, and reimbursement follow-up while reducing administrative work.
Frequently Asked Questions
What is the new plantar fasciitis ICD-10 code for 2026?
New codes, which go into effect October 1, 2026, are as follows: M67.A01 (right foot), M67.A02 (left foot), and M67.A09 (unspecified foot).
Is M72.2 still used for plantar fasciitis?
The 2026 update separates plantar fasciitis from the M72.2 plantar fascial fibromatosis category. M72.2-related codes now identify plantar fascial fibromatosis by laterality.
Should podiatrists use an unspecified plantar fasciitis code?
The unspecified code could be used when documentation does not specify which foot was affected. Laterality-specific codes should be used if the documentation notes right or left.
Can incorrect ICD-10 coding affect podiatry reimbursement?
Yes. Diagnosis-code errors may result in claim edits, denials, questions about medical necessity, and payment delays. The coding cannot be more specific than what the provider documented.
When does the new plantar fasciitis coding take effect?
The new plantar fasciitis codes will be effective for any applicable encounter on October 1, 2026. CMS notes this as part of FY 2027 ICD-10-CM update.