Is S89.399S a billable ICD-10-CM code?

Yes. S89.399S is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does S89.399S sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the knee and lower leg (S80-S89).

S89.399S

S89.399S — Other physeal fracture of lower end of unspecified fibula, sequela

Billable / specific codeICD-10-CMPOA exempt

S89.399S is a billable, specific ICD-10-CM code for other physeal fracture of lower end of unspecified fibula, sequela. It is valid for submission on a claim.

7th character "S" — sequela

The appropriate 7th character is to be added to each code from subcategories S89.0, S89.1, S89.2, and S89.3

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

S89.399S 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

S89.399S is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A53064Billing and Coding: Outpatient Occupational Therapy

Related codes at this level

Codes that share S89.399. If S89.399S is not quite right, the correct code is usually one of these.

Questions about S89.399S

Is S89.399S a billable ICD-10-CM code?: Yes. S89.399S is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S89.399S sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the knee and lower leg (S80-S89).