ICD-10-CM diagnosis code
S63.631S Sprain of interphalangeal joint of left index finger, 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.
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Other codes in S63
921 complete codes in this category.
- S63.629SSprain of interphalangeal joint of unspecified thumb, sequela
- S63.630ASprain of interphalangeal joint of right index finger, initial encounter
- S63.630DSprain of interphalangeal joint of right index finger, subsequent encounter
- S63.630SSprain of interphalangeal joint of right index finger, sequela
- S63.631ASprain of interphalangeal joint of left index finger, initial encounter
- S63.631DSprain of interphalangeal joint of left index finger, subsequent encounter
- S63.631SSprain of interphalangeal joint of left index finger, sequela
- S63.632ASprain of interphalangeal joint of right middle finger, initial encounter
- S63.632DSprain of interphalangeal joint of right middle finger, subsequent encounter
- S63.632SSprain of interphalangeal joint of right middle finger, sequela
- S63.633ASprain of interphalangeal joint of left middle finger, initial encounter
- S63.633DSprain of interphalangeal joint of left middle finger, subsequent encounter
Documentation tips
- Make sure the note supports every element of the title, “Sprain of interphalangeal joint of left index finger, 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 S63.
The international WHO ICD-10 also has S63, 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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