ICD-10-CM 2027
ICD-10 code for elbow region enthesopathy
From the official ICD-10-CM alphabetic index entry “Enthesopathy (peripheral) › elbow region”. Page updated September 29, 2026.
About coding elbow region enthesopathy
The ICD-10-CM code for elbow region enthesopathy is M77.8 (Other enthesopathies, not elsewhere classified).
Within M77 (other enthesopathies), M77.8 is specifically for other enthesopathies, not elsewhere classified. Related codes cover medial epicondylitis (M77.0), lateral epicondylitis (M77.1), Periarthritis of wrist (M77.2), Calcaneal spur (M77.3), Metatarsalgia (M77.4), other enthesopathy of foot and ankle (M77.5) and enthesopathy, unspecified (M77.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 557 (Tendonitis, Myositis and Bursitis with MCC, relative weight 1.489) and DRG 558 (Tendonitis, Myositis and Bursitis without MCC, relative weight 0.8875), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific elbow region enthesopathy codes (official index)
- lateral epicondylitis
- medial epicondylitis
Common questions about elbow region enthesopathy ICD-10 codes
What is the ICD-10 code for elbow region enthesopathy?
- M77.8 — Other enthesopathies, not elsewhere classified.
Is M77.8 billable?
- Yes. M77.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M77.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M77.8 as a principal diagnosis.
Is M77.8 a CC or MCC?
- No. M77.8 is neither a CC nor an MCC under MS-DRG v44.0.