ICD-10-CM 2027 diagnosis code

M60Myositis

Not billable — use a more specific code

M60 is a header code, so it can't be reported by itself. Choose one of the 5 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

M60 is the ICD-10-CM diagnosis code for myositis. It belongs to 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 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: M60.0 (myositis), M60.1 (myositis), M60.2 (classified), M60.8 (myositis) and M60.9 (unspecified).

The conditions in its Excludes2 note aren't part of M60, but may be coded alongside it if the patient has both: inclusion body myositis [IBM] (G72.41).

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

Coding notes

Excludes2Not included here — may be reported together if both conditions exist

inclusion body myositis [IBM] (G72.41)

Notes that apply from higher levels

Instructions written at a parent level also apply to M60.

Broader instructions also apply from M60-M63 Disorders of muscles and Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Codes whose notes reference M60

G71Excludes2
G72Excludes1
M79.1Excludes1

Code history

2016
2017
2018
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2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about M60

Is M60 billable?: No. M60 is a header code. Report one of its more specific subcodes instead.