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ICD-10-CM 2027

ICD-10 code for shoulder region tenosynovitis

M65.81

Other synovitis and tenosynovitis, shoulder

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Tenosynovitis › shoulder region”. Page updated September 29, 2026.

About coding shoulder region tenosynovitis

The ICD-10-CM code for shoulder region tenosynovitis is M65.81 (Other synovitis and tenosynovitis, shoulder).

Within M65.8 (other synovitis and tenosynovitis), M65.81 is specifically for other synovitis and tenosynovitis, shoulder. Related codes cover unspecified site (M65.80), upper arm (M65.82), forearm (M65.83), hand (M65.84), thigh (M65.85), lower leg (M65.86), ankle and foot (M65.87), other site (M65.88) and 1 more.

To report this condition, pick the subcode that matches the documentation: M65.811 (shoulder), M65.812 (shoulder) and M65.819 (shoulder).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

More specific shoulder region tenosynovitis codes (official index)

  • adhesive

Common questions about shoulder region tenosynovitis ICD-10 codes

What is the ICD-10 code for shoulder region tenosynovitis?

M65.81 — Other synovitis and tenosynovitis, shoulder (a header code; report a more specific subcode).

Is M65.81 billable?

No. M65.81 is a header code. Report one of its more specific subcodes instead.