S66.429A

S66.429A: Laceration of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter

Billable / specific codeICD-10-CMunspecified

S66.429A is a billable, specific ICD-10-CM code for laceration of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter. It is valid for submission on a claim.

Check S66.429A with the rest of the claim: free scrubber

7th character "A": initial encounter

The appropriate 7th character is to be added to each code from category S66

A: initial encounter
D: subsequent encounter
S: sequela

Excludes2 inherited from the categories above S66.429A

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

Written on S66: Injury of muscle, fascia and tendon at wrist and hand level

sprain of joints and ligaments of wrist and hand (S63.-)

Risk adjustment

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

Medicare coverage

S66.429A is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A57554Billing and Coding: Immune Globulins

Code history

Unchanged in every release from FY2024 to FY2027.