Is S20.179S a billable ICD-10-CM code?

Yes. S20.179S is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does S20.179S 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 S20.179S?

S20.179S 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 S20.179S (S20.17) and apply to it just the same.

S20.179S

S20.179S — Other superficial bite of breast, unspecified breast, sequela

Billable / specific codeICD-10-CMPOA exemptunspecified

S20.179S is a billable, specific ICD-10-CM code for other superficial bite of breast, unspecified breast, 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 category S20

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above S20.179S

These are not written on S20.179S, but they bind it: a note on a category applies to every code beneath it. Billing S20.179S with anything listed here is a denial.

Written on S20.17 — Other superficial bite of breast

open bite of breast (S21.05-)

Risk adjustment

S20.179S 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

S20.179S 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 S20.179. If S20.179S is not quite right, the correct code is usually one of these.

Questions about S20.179S

Is S20.179S a billable ICD-10-CM code?: Yes. S20.179S is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S20.179S 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 S20.179S?: S20.179S 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 S20.179S (S20.17) and apply to it just the same.