M77.21 Periarthritis, right wrist

Billable ICD-10-CM code, FY2026.

Applies from M77 Other enthesopathies

Excludes1 (never code together)

• bursitis NOS (M71.9-)

Excludes2 (not included here)

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

MS-DRG index

Defines the logic of DRG(s) 557-558 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 726.4 Enthesopathy of wrist and carpus (approximate)

Code annotations containing back-references to M77.21

Back-references to M77

• Type 1 Excludes: M65.2 Calcific tendinitis ("tendinitis as classified in M75-M77")
• Type 2 Excludes: M70 Soft tissue disorders related to use, overuse and pressure ("enthesopathies (M76-M77)")
• Type 1 Excludes: M71 Other bursopathies ("enthesopathies (M76-M77)")

Nearby codes

• M77.10 Lateral epicondylitis, unspecified elbow
• M77.11 Lateral epicondylitis, right elbow
• M77.12 Lateral epicondylitis, left elbow
• M77.2 Periarthritis of wrist
• M77.20 Periarthritis, unspecified wrist
• M77.21 Periarthritis, right wrist (this code)
• M77.22 Periarthritis, left wrist
• M77.3 Calcaneal spur
• M77.30 Calcaneal spur, unspecified foot
• M77.31 Calcaneal spur, right foot
• M77.32 Calcaneal spur, left foot