MCMCB Pro
S58.122A

S58.122APartial traumatic amputation at level between elbow and wrist, left arm, initial encounter

Billable / specific codeICD-10-CMleft

S58.122A is a billable, specific ICD-10-CM code for partial traumatic amputation at level between elbow and wrist, left arm, initial encounter. It is valid for submission on a claim.

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

Risk adjustment

S58.122A 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.

Medicare coverage

S58.122A is named in 10 Medicare coverage policies 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52438Billing and Coding: Tetanus Immunization
  • A54767Billing and Coding: Medicare Preventive Coverage for Certain Vaccines
  • A56459Billing and Coding: Debridement Services
  • A56900Billing and Coding: Immunizations

Related codes at this level

Codes that share S58.122. If S58.122A is not quite right, the correct code is usually one of these.

Questions about S58.122A

Is S58.122A a billable ICD-10-CM code?
Yes. S58.122A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S58.122A sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the elbow and forearm (S50-S59).
ICD-10-CMFY2026-Apr· effective April 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.