M65.359 Trigger finger, unspecified little finger

Billable ICD-10-CM code, FY2026.

Applies from M65 Synovitis and tenosynovitis

Excludes1 (never code together)

• 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.-)

Applies from M65.3 Trigger finger

Applicable to

• Nodular tendinous disease

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 727.03 Trigger finger (acquired) (approximate)

Code annotations containing back-references to M65.359

Back-references to M65.3

• Type 1 Excludes: M20.0 Deformity of finger(s) ("trigger finger (M65.3)")

Nearby codes

• M65.342 Trigger finger, left ring finger
• M65.349 Trigger finger, unspecified ring finger
• M65.35 Trigger finger, little finger
• M65.351 Trigger finger, right little finger
• M65.352 Trigger finger, left little finger
• M65.359 Trigger finger, unspecified little finger (this code)
• M65.4 Radial styloid tenosynovitis [de Quervain]
• M65.8 Other synovitis and tenosynovitis
• M65.80 Other synovitis and tenosynovitis, unspecified site
• M65.81 Other synovitis and tenosynovitis, shoulder
• M65.811 Other synovitis and tenosynovitis, right shoulder