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ICD-10-CM 2027 diagnosis code

M67.A09Plantar fasciitis, unspecified foot

✓ Billable / specificNew for 2027

M67.A09 is a valid, billable ICD-10-CM code for plantar fasciitis, unspecified foot. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code last changed in FY2027 (effective October 1, 2026). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M67.A09

M67.A09 is the ICD-10-CM diagnosis code for plantar fasciitis, unspecified foot. It belongs to category M67 (other disorders of synovium and tendon), block M65-M67 (disorders of synovium and tendon) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within M67.A0, choose M67.A09 (unspecified foot) only when documentation doesn't support a more specific option: right foot (M67.A01) and left foot (M67.A02).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 557 (Tendonitis, Myositis and Bursitis with MCC, relative weight 1.489) and DRG 558 (Tendonitis, Myositis and Bursitis without MCC, relative weight 0.8875), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It was added in FY2027, effective October 1, 2026.

Coding notes

Applicable toConditions and synonyms classified to this code
  • Plantar fasciitis NOS

Notes that apply from higher levels

Instructions written at a parent level also apply to M67.A09.

› From M67 Other disorders of synovium and tendon
Excludes1
  • palmar fascial fibromatosis [Dupuytren] (M72.0)
  • tendinitis NOS (M77.9-)
  • xanthomatosis localized to tendons (E78.2)

Broader instructions also apply from Chapter 13: Diseases of the musculoskeletal system and connective tissue.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2027 (effective 10/1/2026): Added

Common questions about M67.A09

Is M67.A09 billable?

Yes. M67.A09 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can M67.A09 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict M67.A09 as a principal diagnosis.

Is M67.A09 a CC or MCC?

No. M67.A09 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does M67.A09 group to?

M67.A09 is used in the MS-DRG v44.0 logic for MS-DRG 557 (Tendonitis, Myositis and Bursitis with MCC) and MS-DRG 558 (Tendonitis, Myositis and Bursitis without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

Did M67.A09 change for 2027?

Yes. For FY2027 (effective October 1, 2026) it was added to the code set.