MCMedicalCodingSoftware
S58.929A

S58.929A: Partial traumatic amputation of unspecified forearm, level unspecified, initial encounter

Billable / specific codeICD-10-CM

S58.929A is a billable, specific ICD-10-CM code for partial traumatic amputation of unspecified forearm, level unspecified, initial encounter. It is valid for submission on a claim.

Check S58.929A 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 S58

A
initial encounter
D
subsequent encounter
S
sequela

Excludes1 inherited from the categories above S58.929A

A category’s note binds every code beneath it.

Written on S58.9: Traumatic amputation of forearm, level unspecified

  • traumatic amputation of wrist (S68.-)

Written on S58: Traumatic amputation of elbow and forearm

  • traumatic amputation of wrist and hand (S68.-)

Other codes that can never be billed with S58.929A

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • S51Open wound of elbow and forearm
  • S52Fracture of forearm

Risk adjustment

S58.929A risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 405 Traumatic Amputations and Complications0.598 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under S58.929

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.