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ICD-10-CM 2027 diagnosis code

M60.1Interstitial myositis

Not billable — use a more specific code

M60.1 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M60.1

M60.1 is the ICD-10-CM diagnosis code for interstitial myositis. It belongs to category M60 (myositis), block M60-M63 (disorders of muscles) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

Within M60 (myositis), M60.1 is specifically for interstitial myositis. Related codes cover infective myositis (M60.0), foreign body granuloma of soft tissue, not elsewhere classified (M60.2), other myositis (M60.8) and unspecified (M60.9).

To report this condition, pick the subcode that matches the documentation: M60.10 (of unspecified site), M60.11 (shoulder), M60.12 (upper arm), M60.13 (forearm), M60.14 (hand), M60.15 (thigh), M60.16 (lower leg), M60.17 (ankle and foot) and 2 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under M60.1

Notes that apply from higher levels

Instructions written at a parent level also apply to M60.1.

› From M60 Myositis
Excludes2
  • inclusion body myositis [IBM] (G72.41)

Broader instructions also apply from M60-M63 Disorders of muscles and Chapter 13: Diseases 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
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about M60.1

Is M60.1 billable?

No. M60.1 is a header code. Report one of its more specific subcodes instead.