S63.642

S63.642: Sprain of metacarpophalangeal joint of left thumb

Non-billable headerICD-10-CMleft

S63.642 is a non-billable header ICD-10-CM code for sprain of metacarpophalangeal joint of left thumb. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category S63

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above S63.642

A category’s note binds every code beneath it.

Written on S63.6: Other and unspecified sprain of finger(s)

traumatic rupture of ligament of finger at metacarpophalangeal and interphalangeal joint(s) (S63.4-)

Excludes2 inherited from the categories above S63.642

Not part of this code, but both may be coded when both are present.

Written on S63: Dislocation and sprain of joints and ligaments at wrist and hand level

strain of muscle, fascia and tendon of wrist and hand (S66.-)

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 S63.642

3 child codes. Green means billable.