M79 – Other and unspecified soft tissue disorders, not elsewhere classified

ICD-10-CM 2027 diagnosis code · Other soft tissue disorders

Non-billable header

ICD-10-CM code M79

Code: M79 (claims format: M79)
Description: Other and unspecified soft tissue disorders, not elsewhere classified
Short description: Oth and unsp soft tissue disorders, not elsewhere classified
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M70-M79 Other soft tissue disorders

Billable codes under M79

M79 is a header code and cannot be used on claims. Choose the most specific code:

M79.0 – Rheumatism, unspecifiedBillable
M79.1 – MyalgiaHeader (more codes below)
M79.2 – Neuralgia and neuritis, unspecifiedBillable
M79.3 – Panniculitis, unspecifiedBillable
M79.4 – Hypertrophy of (infrapatellar) fat padBillable
M79.5 – Residual foreign body in soft tissueBillable
M79.6 – Pain in limb, hand, foot, fingers and toesHeader (more codes below)
M79.7 – FibromyalgiaBillable
M79.A – Nontraumatic compartment syndromeHeader (more codes below)
M79.8 – Other specified soft tissue disordersHeader (more codes below)
M79.9 – Soft tissue disorder, unspecifiedBillable

Notes for M79

Excludes1 (not coded here):

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

Frequently asked questions

What is ICD-10 code M79?

M79 is the ICD-10-CM code for other and unspecified soft tissue disorders, not elsewhere classified, in the block M70-M79 (Other soft tissue disorders).

Is M79 a billable code?

No. M79 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.