ICD-10-CM diagnosis code
S23.428S Other sprain of sternum, sequela
- Billable
- Yes, a complete code (FY2026)
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.
Documenting S23.428S? Write the note in seconds
Paste your rough notes and get a structured SOAP note. Free, no account needed.
Other codes in S23
111 complete codes in this category.
- S23.420SSprain of sternoclavicular (joint) (ligament), sequela
- S23.421ASprain of chondrosternal joint, initial encounter
- S23.421DSprain of chondrosternal joint, subsequent encounter
- S23.421SSprain of chondrosternal joint, sequela
- S23.428AOther sprain of sternum, initial encounter
- S23.428DOther sprain of sternum, subsequent encounter
- S23.428SOther sprain of sternum, sequela
- S23.429AUnspecified sprain of sternum, initial encounter
- S23.429DUnspecified sprain of sternum, subsequent encounter
- S23.429SUnspecified sprain of sternum, sequela
- S23.8XXASprain of other specified parts of thorax, initial encounter
- S23.8XXDSprain of other specified parts of thorax, subsequent encounter
Documentation tips
- Make sure the note supports every element of the title, “Other sprain of sternum, 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 S23.
The international WHO ICD-10 also has S23, 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.
Look up another code
Stop looking codes up by hand
Docdemic listens to the consultation, writes the note and suggests the diagnosis and procedure codes that fit it, each one checked against your country’s official code list.
Try Docdemic free