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S21.259S

S21.259S: Open bite of unspecified back wall of thorax without penetration into thoracic cavity, sequela

Billable / specific codeICD-10-CMPOA exempt

S21.259S is a billable, specific ICD-10-CM code for open bite of unspecified back wall of thorax without penetration into thoracic cavity, sequela. It is valid for submission on a claim.

Check S21.259S with the rest of the claim: free scrubber

7th character "S": sequela

The appropriate 7th character is to be added to each code from category S21

A
initial encounter
D
subsequent encounter
S
sequela

Excludes1 inherited from the categories above S21.259S

A category’s note binds every code beneath it.

Written on S21.25: Open bite of back wall of thorax without penetration into thoracic cavity

  • superficial bite of back wall of thorax (S20.47)

Written on S21: Open wound of thorax

  • traumatic amputation (partial) of thorax (S28.1)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under S21.259

ICD-10-CMFY2027· effective October 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.