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ICD-10-CM 2027 diagnosis code

S79.91Unspecified injury of hip

Not billable — use a more specific codeRequires 7th character

S79.91 is a header code, so it can't be reported by itself. Choose one of the 3 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 S79.91

S79.91 is the ICD-10-CM diagnosis code for unspecified injury of hip. It belongs to category S79 (other and unspecified injuries of hip and thigh), block S70-S79 (injuries to the hip and thigh) 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 3 subcodes must be used instead.

Within S79.9 (unspecified injury of hip and thigh), S79.91 is specifically for unspecified injury of hip. Related codes cover thigh (S79.92).

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 in subcategory S79.9

  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Notes that apply from higher levels

Instructions written at a parent level also apply to S79.91.

› From S79 Other and unspecified injuries of hip and thigh
Note
  • A fracture not indicated as open or closed should be coded to closed

Broader instructions also apply from S70-S79 Injuries to the hip and thigh 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 S79.91.

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 S79.91

Is S79.91 billable?

No. S79.91 is a header code. Report one of its more specific subcodes instead.