Is S90.473A a billable ICD-10-CM code?

Yes. S90.473A is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does S90.473A sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the ankle and foot (S90-S99).

What cannot be coded together with S90.473A?

S90.473A carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above S90.473A (S90.47) and apply to it just the same.

S90.473A

S90.473A — Other superficial bite of unspecified great toe, initial encounter

Billable / specific codeICD-10-CM

S90.473A is a billable, specific ICD-10-CM code for other superficial bite of unspecified great toe, 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 S90

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above S90.473A

These are not written on S90.473A, but they bind it: a note on a category applies to every code beneath it. Billing S90.473A with anything listed here is a denial.

Written on S90.47 — Other superficial bite of toe

open bite of toe (S91.15-, S91.25-)

Risk adjustment

S90.473A 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.

Code history

S90.473A has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share S90.473. If S90.473A is not quite right, the correct code is usually one of these.

Questions about S90.473A

Is S90.473A a billable ICD-10-CM code?: Yes. S90.473A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S90.473A sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the ankle and foot (S90-S99).
What cannot be coded together with S90.473A?: S90.473A carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above S90.473A (S90.47) and apply to it just the same.