ICD-10-CM 2027 diagnosis code

M60.83Other myositis, forearm

Not billable — use a more specific code

M60.83 is a header code, so it can't be reported by itself. Choose one of the 3 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 M60.83

M60.83 is the ICD-10-CM diagnosis code for other myositis, forearm. 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 3 subcodes must be used instead.

Within M60.8 (other myositis), M60.83 is specifically for other myositis, forearm. Related codes cover unspecified site (M60.80), shoulder (M60.81), upper arm (M60.82), hand (M60.84), thigh (M60.85), lower leg (M60.86), ankle and foot (M60.87), other site (M60.88) and 1 more.

To report this condition, pick the subcode that matches the documentation: M60.831 (forearm), M60.832 (forearm) and M60.839 (forearm).

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 M60.83

Notes that apply from higher levels

Instructions written at a parent level also apply to M60.83.

› 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.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to M60.83.

Myositis › specified type NEC › forearm

Code history

2016
2017
2018
2019
2020
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 M60.83

Is M60.83 billable?: No. M60.83 is a header code. Report one of its more specific subcodes instead.