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ICD-10-CM 2027 diagnosis code

S02.64Fracture of ramus of mandible

Not billable — use a more specific codeRequires 7th character

S02.64 is a header code, so it can't be reported by itself. Choose one of the 9 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 S02.64

S02.64 is the ICD-10-CM diagnosis code for fracture of ramus of mandible. It belongs to category S02 (fracture of skull and facial bones), 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 9 subcodes must be used instead.

Within S02.6 (fracture of mandible), S02.64 is specifically for fracture of ramus of mandible. Related codes cover unspecified (S02.60), condylar process of mandible (S02.61), subcondylar process of mandible (S02.62), coronoid process of mandible (S02.63), angle of mandible (S02.65), symphysis of mandible (S02.66), alveolus of mandible (S02.67) and of other specified site (S02.69).

Codes in this range require a 7th character: A for initial encounter for closed fracture, B for initial encounter for open fracture, D for subsequent encounter for fracture with routine healing, G for subsequent encounter for fracture with delayed healing, K for subsequent encounter for fracture with nonunion 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 S02

  • Ainitial encounter for closed fractureS02.64XA
  • Binitial encounter for open fractureS02.64XB
  • Dsubsequent encounter for fracture with routine healingS02.64XD
  • Gsubsequent encounter for fracture with delayed healingS02.64XG
  • Ksubsequent encounter for fracture with nonunionS02.64XK
  • SsequelaS02.64XS

Notes that apply from higher levels

Instructions written at a parent level also apply to S02.64.

› From S02 Fracture of skull and facial bones
Note
  • A fracture not indicated as open or closed should be coded to closed
Code also
  • any associated intracranial injury (S06.-)

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 S02.64.

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 S02.64

Is S02.64 billable?

No. S02.64 is a header code. Report one of its more specific subcodes instead.