ICD-10-CM diagnosis code
S23.140A Subluxation of T6/T7 thoracic vertebra, initial encounter
- Billable
- Yes, a complete code (FY2026)
Encounter (7th character)
This code is for the initial encounter: the patient is receiving active treatment for the condition (for example surgery, an emergency department visit or evaluation by a new clinician).
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Other codes in S23
111 complete codes in this category.
- S23.132ASubluxation of T5/T6 thoracic vertebra, initial encounter
- S23.132DSubluxation of T5/T6 thoracic vertebra, subsequent encounter
- S23.132SSubluxation of T5/T6 thoracic vertebra, sequela
- S23.133ADislocation of T5/T6 thoracic vertebra, initial encounter
- S23.133DDislocation of T5/T6 thoracic vertebra, subsequent encounter
- S23.133SDislocation of T5/T6 thoracic vertebra, sequela
- S23.140ASubluxation of T6/T7 thoracic vertebra, initial encounter
- S23.140DSubluxation of T6/T7 thoracic vertebra, subsequent encounter
- S23.140SSubluxation of T6/T7 thoracic vertebra, sequela
- S23.141ADislocation of T6/T7 thoracic vertebra, initial encounter
- S23.141DDislocation of T6/T7 thoracic vertebra, subsequent encounter
- S23.141SDislocation of T6/T7 thoracic vertebra, sequela
Documentation tips
- Make sure the note supports every element of the title, “Subluxation of T6/T7 thoracic vertebra, initial encounter”: 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.
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