ICD10Check
CheckerBrowseOpen

M77

⚠ Non-billable (Header)

Other enthesopathies

Diseases of the musculoskeletal system and connective tissue (M00-M99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

Check This Code

❌ Excludes1

direct

Cannot be coded with M77

  • • bursitis NOS (M71.9-)

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • bursitis due to use, overuse and pressure (M70.-)
  • • osteophyte (M25.7)
  • • spinal enthesopathy (M46.0-)

Child Codes (8)

M77.0Medial epicondylitisM77.1Lateral epicondylitisM77.2Periarthritis of wristM77.3Calcaneal spurM77.4MetatarsalgiaM77.5Other enthesopathy of foot and ankleM77.8Other enthesopathies, not elsewhere classifiedM77.9Enthesopathy, unspecified

🧪 Validate Combinations

Add M77 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeM77
BillableNo — Header code
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes11 rule(s)
Excludes23 note(s)
Child codes8

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)