M79 — Other and unspecified soft tissue disorders, not elsewhere classified
Is M79 billable?
No — M79 is a non-billable header code. M79 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 52 billable codes beneath M79.
Billable codes under this header
- M79.0Rheumatism, unspecified
- M79.2Neuralgia and neuritis, unspecified
- M79.3Panniculitis, unspecified
- M79.4Hypertrophy of (infrapatellar) fat pad
- M79.5Residual foreign body in soft tissue
- M79.7Fibromyalgia
- M79.9Soft tissue disorder, unspecified
- M79.10Myalgia, unspecified site
- M79.11Myalgia of mastication muscle
- M79.12Myalgia of auxiliary muscles, head and neck
- M79.18Myalgia, other site
- M79.A3Nontraumatic compartment syndrome of abdomen
- M79.A9Nontraumatic compartment syndrome of other sites
- M79.81Nontraumatic hematoma of soft tissue
- M79.89Other specified soft tissue disorders
- M79.601Pain in right arm
- M79.602Pain in left arm
- M79.603Pain in arm, unspecified
- M79.604Pain in right leg
- M79.605Pain in left leg
- M79.606Pain in leg, unspecified
- M79.609Pain in unspecified limb
- M79.621Pain in right upper arm
- M79.622Pain in left upper arm
- M79.629Pain in unspecified upper arm
- M79.631Pain in right forearm
- M79.632Pain in left forearm
- M79.639Pain in unspecified forearm
- M79.641Pain in right hand
- M79.642Pain in left hand
- M79.643Pain in unspecified hand
- M79.644Pain in right finger(s)
- M79.645Pain in left finger(s)
- M79.646Pain in unspecified finger(s)
- M79.651Pain in right thigh
- M79.652Pain in left thigh
- M79.659Pain in unspecified thigh
- M79.661Pain in right lower leg
- M79.662Pain in left lower leg
- M79.669Pain in unspecified lower leg
- M79.671Pain in right foot
- M79.672Pain in left foot
- M79.673Pain in unspecified foot
- M79.674Pain in right toe(s)
- M79.675Pain in left toe(s)
- M79.676Pain in unspecified toe(s)
- M79.A11Nontraumatic compartment syndrome of right upper extremity
- M79.A12Nontraumatic compartment syndrome of left upper extremity
- M79.A19Nontraumatic compartment syndrome of unspecified upper extremity
- M79.A21Nontraumatic compartment syndrome of right lower extremity
- M79.A22Nontraumatic compartment syndrome of left lower extremity
- M79.A29Nontraumatic compartment syndrome of unspecified lower extremity
M79 at a glance
| Code | M79 |
|---|---|
| Description | Other and unspecified soft tissue disorders, not elsewhere classified |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with M79 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M79, but a patient may have both at the same time. When documentation supports it, M79 and the excluded code may both be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
What codes fall under M79? (11)
- M79.0Rheumatism, unspecified
- M79.1Myalgianot billable
- M79.2Neuralgia and neuritis, unspecified
- M79.3Panniculitis, unspecified
- M79.4Hypertrophy of (infrapatellar) fat pad
- M79.5Residual foreign body in soft tissue
- M79.6Pain in limb, hand, foot, fingers and toesnot billable
- M79.7Fibromyalgia
- M79.ANontraumatic compartment syndromenot billable
- M79.8Other specified soft tissue disordersnot billable
- M79.9Soft tissue disorder, unspecified
How long has M79 existed?
M79 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with M79?
ICD-10-CM declares these codes mutually exclusive with M79 — exactly one of each pair can be correct for a given encounter.