ICD-10-CM diagnosis code
S21.149S Puncture wound with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, sequela
- Billable
- Yes, a complete code (FY2026)
- Category
- S21 Open wound of thorax
Encounter (7th character)
This code is for a sequela: a complication or condition that arises as a direct result of the injury. The sequela itself is usually coded first, followed by this code.
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Other codes in S21
288 complete codes in this category.
- S21.141SPuncture wound with foreign body of right front wall of thorax without penetration into thoracic cavity, sequela
- S21.142APuncture wound with foreign body of left front wall of thorax without penetration into thoracic cavity, initial encounter
- S21.142DPuncture wound with foreign body of left front wall of thorax without penetration into thoracic cavity, subsequent encounter
- S21.142SPuncture wound with foreign body of left front wall of thorax without penetration into thoracic cavity, sequela
- S21.149APuncture wound with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, initial encounter
- S21.149DPuncture wound with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, subsequent encounter
- S21.149SPuncture wound with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, sequela
- S21.151AOpen bite of right front wall of thorax without penetration into thoracic cavity, initial encounter
- S21.151DOpen bite of right front wall of thorax without penetration into thoracic cavity, subsequent encounter
- S21.151SOpen bite of right front wall of thorax without penetration into thoracic cavity, sequela
- S21.152AOpen bite of left front wall of thorax without penetration into thoracic cavity, initial encounter
- S21.152DOpen bite of left front wall of thorax without penetration into thoracic cavity, subsequent encounter
Documentation tips
- Make sure the note supports every element of the title, “Puncture wound with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, sequela”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to S21.
The international WHO ICD-10 also has S21, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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