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S79.121P

S79.121PSalter-Harris Type II physeal fracture of lower end of right femur, subsequent encounter for fracture with malunion

Billable / specific codeICD-10-CMPOA exemptright

S79.121P is a billable, specific ICD-10-CM code for salter-harris type ii physeal fracture of lower end of right femur, subsequent encounter for fracture with malunion. It is valid for submission on a claim.

7th character "P" — subsequent encounter for fracture with malunion

The appropriate 7th character is to be added to each code from subcategories S79.0 and S79.1

A
initial encounter for closed fracture
D
subsequent encounter for fracture with routine healing
G
subsequent encounter for fracture with delayed healing
K
subsequent encounter for fracture with nonunion
P
subsequent encounter for fracture with malunion
S
sequela

Risk adjustment

S79.121P does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

S79.121P is named in 5 Medicare coverage policies 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

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Related codes at this level

Codes that share S79.121. If S79.121P is not quite right, the correct code is usually one of these.

Questions about S79.121P

Is S79.121P a billable ICD-10-CM code?
Yes. S79.121P is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S79.121P sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the hip and thigh (S70-S79).
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.