Skip to content
Dx

ICD-10-CM 2027 diagnosis code

S09Other and unspecified injuries of head

Not billable — use a more specific code

S09 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About S09

S09 is the ICD-10-CM diagnosis code for other and unspecified injuries of head. It belongs to block S00-S09 (injuries to the head) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: S09.0 (classified), S09.1 (head), S09.2 (drum), S09.3 (ear), S09.8 (head) and S09.9 (head).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under S09

Notes that apply from higher levels

Instructions written at a parent level also apply to S09.

Broader instructions also apply from S00-S09 Injuries to the head and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Codes whose notes reference S09

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about S09

Is S09 billable?

No. S09 is a header code. Report one of its more specific subcodes instead.