M65.31

M65.31: Trigger thumb

Non-billable headerICD-10-CM

M65.31 is a non-billable header ICD-10-CM code for trigger thumb. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above M65.31

A category’s note binds every code beneath it.

Written on M65: Synovitis and tenosynovitis

chronic crepitant synovitis of hand and wrist (M70.0-)
current injury - see injury of ligament or tendon by body region
soft tissue disorders related to use, overuse and pressure (M70.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead M65.31

3 child codes. Green means billable.

M65.311Trigger thumb, right thumb
M65.312Trigger thumb, left thumb
M65.319Trigger thumb, unspecified thumb

Other codes under M65.3

M65.30Trigger finger, unspecified finger
M65.32Trigger finger, index finger
M65.33Trigger finger, middle finger
M65.34Trigger finger, ring finger
M65.35Trigger finger, little finger