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Dx

ICD-10-CM 2027 diagnosis code

S09.31Primary blast injury of ear

Not billable — use a more specific codeRequires 7th character

S09.31 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it and add the required 7th character.

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 S09.31

S09.31 is the ICD-10-CM diagnosis code for primary blast injury of ear. It belongs to category S09 (other and unspecified injuries of head), 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 4 subcodes must be used instead.

Within S09.3 (other specified and unspecified injury of middle and inner ear), S09.31 is specifically for primary blast injury of ear. Related codes cover unspecified injury of middle and inner ear (S09.30) and other specified injury of middle and inner ear (S09.39).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

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

7th character

The appropriate 7th character is to be added to each code from category S09

  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Coding notes

Applicable toConditions and synonyms classified to this code
  • Blast injury of ear NOS

Notes that apply from higher levels

Instructions written at a parent level also apply to S09.31.

› From S09.3 Other specified and unspecified injury of middle and inner ear
Excludes1
Excludes2

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

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to S09.31.

Codes whose notes reference S09.31

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 S09.31

Is S09.31 billable?

No. S09.31 is a header code. Report one of its more specific subcodes instead.