Is S20.171D a billable ICD-10-CM code?

Yes. S20.171D is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does S20.171D sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the thorax (S20-S29).

What cannot be coded together with S20.171D?

S20.171D 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 S20.171D (S20.17) and apply to it just the same.

S20.171D

S20.171D — Other superficial bite of breast, right breast, subsequent encounter

Billable / specific codeICD-10-CMPOA exemptright

S20.171D is a billable, specific ICD-10-CM code for other superficial bite of breast, right breast, 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 S20

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above S20.171D

These are not written on S20.171D, but they bind it: a note on a category applies to every code beneath it. Billing S20.171D with anything listed here is a denial.

Written on S20.17 — Other superficial bite of breast

open bite of breast (S21.05-)

Risk adjustment

S20.171D 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

S20.171D is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A58872Billing and Coding: Tetanus Immunization
A58873Billing and Coding: Tetanus Immunization

Code history

S20.171D 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 S20.171. If S20.171D is not quite right, the correct code is usually one of these.

Questions about S20.171D

Is S20.171D a billable ICD-10-CM code?: Yes. S20.171D is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S20.171D sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the thorax (S20-S29).
What cannot be coded together with S20.171D?: S20.171D 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 S20.171D (S20.17) and apply to it just the same.