MCMCB Pro
S46.399D

S46.399DOther injury of muscle, fascia and tendon of triceps, unspecified arm, subsequent encounter

Billable / specific codeICD-10-CMPOA exemptunspecified

S46.399D is a billable, specific ICD-10-CM code for other injury of muscle, fascia and tendon of triceps, unspecified arm, subsequent encounter. It is valid for submission on a claim.

7th character "D" — subsequent encounter

The appropriate 7th character is to be added to each code from category S46

A
initial encounter
D
subsequent encounter
S
sequela

Risk adjustment

S46.399D 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.

Related codes at this level

Codes that share S46.399. If S46.399D is not quite right, the correct code is usually one of these.

Questions about S46.399D

Is S46.399D a billable ICD-10-CM code?
Yes. S46.399D is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S46.399D sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the shoulder and upper arm (S40-S49).
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.