ICD-10-CM · Chapter 13 · M00-M99
M77 Other enthesopathies
Excludes 1 (cannot be coded together)
- bursitis NOS (M71.9-)
Excludes 2 (not included here)
- bursitis due to use, overuse and pressure (M70.-)
- osteophyte (M25.7)
- spinal enthesopathy (M46.0-)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| M77..0 | Medial epicondylitis | No |
| M77..00 | Medial epicondylitis, unspecified elbow | Yes |
| M77..01 | Medial epicondylitis, right elbow | Yes |
| M77..02 | Medial epicondylitis, left elbow | Yes |
| M77..1 | Lateral epicondylitis | No |
| M77..10 | Lateral epicondylitis, unspecified elbow | Yes |
| M77..11 | Lateral epicondylitis, right elbow | Yes |
| M77..12 | Lateral epicondylitis, left elbow | Yes |
| M77..2 | Periarthritis of wrist | No |
| M77..20 | Periarthritis, unspecified wrist | Yes |
| M77..21 | Periarthritis, right wrist | Yes |
| M77..22 | Periarthritis, left wrist | Yes |
| M77..3 | Calcaneal spur | No |
| M77..30 | Calcaneal spur, unspecified foot | Yes |
| M77..31 | Calcaneal spur, right foot | Yes |
| M77..32 | Calcaneal spur, left foot | Yes |
| M77..4 | Metatarsalgia | No |
| M77..40 | Metatarsalgia, unspecified foot | Yes |
| M77..41 | Metatarsalgia, right foot | Yes |
| M77..42 | Metatarsalgia, left foot | Yes |
| M77..5 | Other enthesopathy of foot and ankle | No |
| M77..50 | Other enthesopathy of unspecified foot and ankle | Yes |
| M77..51 | Other enthesopathy of right foot and ankle | Yes |
| M77..52 | Other enthesopathy of left foot and ankle | Yes |
| M77..8 | Other enthesopathies, not elsewhere classified | Yes |
| M77..9 | Enthesopathy, unspecified | Yes |
Plain-language terms for this code
The following entries in the US Medical Glossary correspond to ICD-10-CM category M77:
- Tennis Elbow (Lateral Epicondylitis) — Epicondilitis Lateral (Codo de Tenista)
- Tendinitis — Tendinitis
Last reviewed: September 2026