M77: Other enthesopathies

Codes under M77 (Other enthesopathies). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
M77.0	Medial epicondylitis	—
M77.00	Medial epicondylitis, unspecified elbow	✓
M77.01	Medial epicondylitis, right elbow	✓
M77.1	Lateral epicondylitis	—
M77.02	Medial epicondylitis, left elbow	✓
M77.2	Periarthritis of wrist	—
M77.3	Calcaneal spur	—
M77.4	Metatarsalgia	—
M77.5	Other enthesopathy of foot and ankle	—
M77.8	Other enthesopathies, not elsewhere classified	✓
M77.9	Enthesopathy, unspecified	✓
M77.10	Lateral epicondylitis, unspecified elbow	✓
M77.11	Lateral epicondylitis, right elbow	✓
M77.12	Lateral epicondylitis, left elbow	✓
M77.20	Periarthritis, unspecified wrist	✓
M77.21	Periarthritis, right wrist	✓
M77.22	Periarthritis, left wrist	✓
M77.30	Calcaneal spur, unspecified foot	✓
M77.31	Calcaneal spur, right foot	✓
M77.32	Calcaneal spur, left foot	✓
M77.40	Metatarsalgia, unspecified foot	✓
M77.41	Metatarsalgia, right foot	✓
M77.42	Metatarsalgia, left foot	✓
M77.50	Other enthesopathy of unspecified foot and ankle	✓
M77.51	Other enthesopathy of right foot and ankle	✓
M77.52	Other enthesopathy of left foot and ankle	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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