M79.A11: Nontraumatic compartment syndrome of right upper extremity
M79.A11, nontraumatic compartment syndrome of right upper extremity, is listed as a covered diagnosis in 3 Medicare billing and coding articles that apply to 25 HCPCS Level II codes, including C8900 (Magnetic resonance angiography with contrast, abdomen), C8901 (Magnetic resonance angiography without contrast, abdomen), C8902 (Magnetic resonance angiography without contrast followed…). The articles come from 1 Medicare contractor. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.
HCPCS Level II codes with M79.A11 as a covered diagnosis
| Code | Description | Medicare coverage | DMEPOS fee 2026 (state range) | Articles listing it |
|---|---|---|---|---|
| C8900 | Magnetic resonance angiography with contrast, abdomen | Special coverage instructions apply | — | 1 |
| C8901 | Magnetic resonance angiography without contrast, abdomen | Special coverage instructions apply | — | 1 |
| C8902 | Magnetic resonance angiography without contrast followed by with contrast, abdomen | Special coverage instructions apply | — | 1 |
| C8909 | Magnetic resonance angiography with contrast, chest (excluding myocardium) | Special coverage instructions apply | — | 1 |
| C8910 | Magnetic resonance angiography without contrast, chest (excluding myocardium) | Special coverage instructions apply | — | 1 |
| C8911 | Magnetic resonance angiography without contrast followed by with contrast, chest (excluding myocardium) | Special coverage instructions apply | — | 1 |
| C8912 | Magnetic resonance angiography with contrast, lower extremity | Special coverage instructions apply | — | 1 |
| C8913 | Magnetic resonance angiography without contrast, lower extremity | Special coverage instructions apply | — | 1 |
| C8914 | Magnetic resonance angiography without contrast followed by with contrast, lower extremity | Special coverage instructions apply | — | 1 |
| C8918 | Magnetic resonance angiography with contrast, pelvis | Special coverage instructions apply | — | 1 |
| C8919 | Magnetic resonance angiography without contrast, pelvis | Special coverage instructions apply | — | 1 |
| C8920 | Magnetic resonance angiography without contrast followed by with contrast, pelvis | Special coverage instructions apply | — | 1 |
| C8931 | Magnetic resonance angiography with contrast, spinal canal and contents | Special coverage instructions apply | — | 1 |
| C8932 | Magnetic resonance angiography without contrast, spinal canal and contents | Special coverage instructions apply | — | 1 |
| C8933 | Magnetic resonance angiography without contrast followed by with contrast, spinal canal and contents | Special coverage instructions apply | — | 1 |
| C8934 | Magnetic resonance angiography with contrast, upper extremity | Special coverage instructions apply | — | 1 |
| C8935 | Magnetic resonance angiography without contrast, upper extremity | Special coverage instructions apply | — | 1 |
| C8936 | Magnetic resonance angiography without contrast followed by with contrast, upper extremity | Special coverage instructions apply | — | 1 |
| G0283 | Electrical stimulation (unattended), to one or more areas for indication(s) other than wound care, as part of a therapy plan of care | Carrier judgment | — | 2 |
| G0152 | Services performed by a qualified occupational therapist in the home health or hospice setting, each 15 minutes | Carrier judgment | — | 1 |
| G0158 | Services performed by a qualified occupational therapist assistant in the home health or hospice setting, each 15 minutes | Carrier judgment | — | 1 |
| G0160 | Services performed by a qualified occupational therapist, in the home health setting, in the establishment or delivery of a safe and effective occupational therapy maintenance program, each 15 minutes | Carrier judgment | — | 1 |
| G2169 | Services performed by an occupational therapist assistant in the home health setting in the delivery of a safe and effective occupational therapy maintenance program, each 15 minutes | Carrier judgment | — | 1 |
| G0281 | Electrical stimulation, (unattended), to one or more areas, for chronic stage iii and stage iv pressure ulcers, arterial ulcers, diabetic ulcers, and venous stasis ulcers not demonstrating measurable signs of healing after 30 days of conventional care, as part of a therapy plan of care | Carrier judgment | — | 1 |
| G0329 | Electromagnetic therapy, to one or more areas for chronic stage iii and stage iv pressure ulcers, arterial ulcers, diabetic ulcers and venous stasis ulcers not demonstrating measurable signs of healing after 30 days of conventional care as part of a therapy plan of care | Carrier judgment | — | 1 |
Medicare policy articles listing M79.A11
- A56775: Billing and Coding: Magnetic Resonance Angiography (Palmetto GBA (MAC - Part A, MAC - Part B); 18 Level II codes). LCD with the same title: L34424
- A53057: Billing and Coding: Home Health Occupational Therapy (Palmetto GBA (HHH MAC); 5 Level II codes). LCD with the same title: L34560
- A53064: Billing and Coding: Outpatient Occupational Therapy (Palmetto GBA (MAC - Part A); 3 Level II codes). LCD with the same title: L34427
A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.
Other M79 diagnoses (Other and unspecified soft tissue disorders, not elsewhere classified)
- M79.A12 — Nontraumatic compartment syndrome of left upper extremity
- M79.10 — Myalgia, unspecified site
- M79.11 — Myalgia of mastication muscle
- M79.12 — Myalgia of auxiliary muscles, head and neck
- M79.18 — Myalgia, other site
- M79.2 — Neuralgia and neuritis, unspecified
- M79.601 — Pain in right arm
- M79.602 — Pain in left arm
- M79.604 — Pain in right leg
- M79.605 — Pain in left leg
- M79.621 — Pain in right upper arm
- M79.622 — Pain in left upper arm
- M79.631 — Pain in right forearm
- M79.632 — Pain in left forearm
- M79.641 — Pain in right hand
- M79.642 — Pain in left hand
- M79.644 — Pain in right finger(s)
- M79.645 — Pain in left finger(s)
- M79.651 — Pain in right thigh
- M79.652 — Pain in left thigh
- M79.661 — Pain in right lower leg
- M79.662 — Pain in left lower leg
- M79.671 — Pain in right foot
- M79.672 — Pain in left foot
- M79.674 — Pain in right toe(s)
- M79.675 — Pain in left toe(s)
- M79.7 — Fibromyalgia
- M79.81 — Nontraumatic hematoma of soft tissue
- M79.89 — Other specified soft tissue disorders
Frequently asked questions
Does Medicare cover M79.A11 (Nontraumatic compartment syndrome of right upper extremity)?
Medicare covers items and services, not diagnoses. 3 Medicare billing and coding articles list M79.A11 as a covered diagnosis for 25 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.
Which HCPCS codes can be billed with ICD-10 M79.A11?
The Level II codes from the policies most specific to this diagnosis are C8900 (Magnetic resonance angiography with contrast, abdomen, 1 article); C8901 (Magnetic resonance angiography without contrast, abdomen, 1 article); C8902 (Magnetic resonance angiography without contrast followed…, 1 article); C8909 (Magnetic resonance angiography with contrast, chest…, 1 article); C8910 (Magnetic resonance angiography without contrast, chest…, 1 article). Code choice depends on the item supplied; check each code's descriptor.
Which Medicare policy articles list M79.A11?
A56775 (Billing and Coding: Magnetic Resonance Angiography); A53057 (Billing and Coding: Home Health Occupational Therapy); A53064 (Billing and Coding: Outpatient Occupational Therapy).
What is ICD-10-CM code M79.A11?
M79.A11 is the ICD-10-CM code for nontraumatic compartment syndrome of right upper extremity, in category M79 (Other and unspecified soft tissue disorders, not elsewhere classified), chapter 13: Diseases of the musculoskeletal system and connective tissue.
Next steps
- Run a reimbursement report for a device billed under C8900
- Watch C8900 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for C8900
Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.
Chapter 13: Diseases of the musculoskeletal system and connective tissue · All diagnoses · HCPCS lookup