M77
Non-billableOther enthesopathies
M77 is the ICD-10-CM code for Other enthesopathies. It is a non-billable category code — use a more specific child code such as M77.0 for billing.
- Status
- Header (non-billable)
- Chapter
- M00-M99
- Subcodes
- 8
- Edition
- FY2026
M00-M99 Diseases of the musculoskeletal system and connective tissue
What this means — in plain language
MedlinePlus · NIHYour connective tissue supports many different parts of your body, such as your skin, eyes, and heart. It is like a "cellular glue" that gives your body parts their shape and helps keep them strong. It also helps some of your tissues do their work. It is made of many kinds of proteins. Cartilage and fat are types of connective tissue. Over 200 disorders that impact connective tissue. There are different types:…
Read more about Connective Tissue Disorders at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Excludes1 — not coded here
- •bursitis NOS (M71.9-)
Excludes2 — not included here
Frequently asked questions
- What is ICD-10 code M77?
- M77 is the ICD-10-CM code for "Other enthesopathies". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
- Is M77 a billable code?
- No — M77 is a non-billable header code. Use a more specific child code (such as M77.0) for billing.
- What is excluded from M77?
- Excludes1 (not coded here): bursitis NOS (M71.9-).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
Look up another ICD-10 code or condition