ICD-10-CM 2027 diagnosis code

M79Other and unspecified soft tissue disorders, not elsewhere classified

Not billable — use a more specific code

M79 is a header code, so it can't be reported by itself. Choose one of the 11 more specific codes beneath it.Short description: Oth and unsp soft tissue disorders, not elsewhere classified

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 M79

M79 is the ICD-10-CM diagnosis code for other and unspecified soft tissue disorders, not elsewhere classified. It belongs to block M70-M79 (other soft tissue disorders) 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 11 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: M79.0 (unspecified), M79.1 (myalgia), M79.2 (unspecified), M79.3 (unspecified), M79.4 (pad), M79.5 (tissue), M79.6 (toes), M79.7 (Fibromyalgia) and 3 more.

Don't report M79 together with the conditions in its Excludes1 note: psychogenic rheumatism (F45.8) and soft tissue pain, psychogenic (F45.41).

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 M79

Coding notes

Excludes1Not coded here — never report together with this code

psychogenic rheumatism (F45.8)
soft tissue pain, psychogenic (F45.41)

Notes that apply from higher levels

Instructions written at a parent level also apply to M79.

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

Code history

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2027

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

Common questions about M79

Is M79 billable?: No. M79 is a header code. Report one of its more specific subcodes instead.