ICD-10-CM · Chapter 13 · M00-M99
M79 Other and unspecified soft tissue disorders, not elsewhere classified
Excludes 1 (cannot be coded together)
- psychogenic rheumatism (F45.8)
- soft tissue pain, psychogenic (F45.41)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| M79..0 | Rheumatism, unspecified | Yes |
| M79..1 | Myalgia | No |
| M79..10 | Myalgia, unspecified site | Yes |
| M79..11 | Myalgia of mastication muscle | Yes |
| M79..12 | Myalgia of auxiliary muscles, head and neck | Yes |
| M79..18 | Myalgia, other site | Yes |
| M79..2 | Neuralgia and neuritis, unspecified | Yes |
| M79..3 | Panniculitis, unspecified | Yes |
| M79..4 | Hypertrophy of (infrapatellar) fat pad | Yes |
| M79..5 | Residual foreign body in soft tissue | Yes |
| M79..6 | Pain in limb, hand, foot, fingers and toes | No |
| M79..60 | Pain in limb, unspecified | No |
| M79..601 | Pain in right arm | Yes |
| M79..602 | Pain in left arm | Yes |
| M79..603 | Pain in arm, unspecified | Yes |
| M79..604 | Pain in right leg | Yes |
| M79..605 | Pain in left leg | Yes |
| M79..606 | Pain in leg, unspecified | Yes |
| M79..609 | Pain in unspecified limb | Yes |
| M79..62 | Pain in upper arm | No |
| M79..621 | Pain in right upper arm | Yes |
| M79..622 | Pain in left upper arm | Yes |
| M79..629 | Pain in unspecified upper arm | Yes |
| M79..63 | Pain in forearm | No |
| M79..631 | Pain in right forearm | Yes |
| M79..632 | Pain in left forearm | Yes |
| M79..639 | Pain in unspecified forearm | Yes |
| M79..64 | Pain in hand and fingers | No |
| M79..641 | Pain in right hand | Yes |
| M79..642 | Pain in left hand | Yes |
| M79..643 | Pain in unspecified hand | Yes |
| M79..644 | Pain in right finger(s) | Yes |
| M79..645 | Pain in left finger(s) | Yes |
| M79..646 | Pain in unspecified finger(s) | Yes |
| M79..65 | Pain in thigh | No |
| M79..651 | Pain in right thigh | Yes |
| M79..652 | Pain in left thigh | Yes |
| M79..659 | Pain in unspecified thigh | Yes |
| M79..66 | Pain in lower leg | No |
| M79..661 | Pain in right lower leg | Yes |
| M79..662 | Pain in left lower leg | Yes |
| M79..669 | Pain in unspecified lower leg | Yes |
| M79..67 | Pain in foot and toes | No |
| M79..671 | Pain in right foot | Yes |
| M79..672 | Pain in left foot | Yes |
| M79..673 | Pain in unspecified foot | Yes |
| M79..674 | Pain in right toe(s) | Yes |
| M79..675 | Pain in left toe(s) | Yes |
| M79..676 | Pain in unspecified toe(s) | Yes |
| M79..7 | Fibromyalgia | Yes |
| M79..A | Nontraumatic compartment syndrome | No |
| M79..A1 | Nontraumatic compartment syndrome of upper extremity | No |
| M79..A11 | Nontraumatic compartment syndrome of right upper extremity | Yes |
| M79..A12 | Nontraumatic compartment syndrome of left upper extremity | Yes |
| M79..A19 | Nontraumatic compartment syndrome of unspecified upper extremity | Yes |
| M79..A2 | Nontraumatic compartment syndrome of lower extremity | No |
| M79..A21 | Nontraumatic compartment syndrome of right lower extremity | Yes |
| M79..A22 | Nontraumatic compartment syndrome of left lower extremity | Yes |
| M79..A29 | Nontraumatic compartment syndrome of unspecified lower extremity | Yes |
| M79..A3 | Nontraumatic compartment syndrome of abdomen | Yes |
| M79..A9 | Nontraumatic compartment syndrome of other sites | Yes |
| M79..8 | Other specified soft tissue disorders | No |
| M79..81 | Nontraumatic hematoma of soft tissue | Yes |
| M79..89 | Other specified soft tissue disorders | Yes |
| M79..9 | Soft tissue disorder, unspecified | Yes |
Plain-language terms for this code
The following entries in the US Medical Glossary correspond to ICD-10-CM category M79:
- Muscle Pain — Dolor muscular
- Neuralgia — Neuralgia
- Fibromyalgia — Fibromialgia
Last reviewed: September 2026