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ICD-10-CM 2027 diagnosis code

S02.642Fracture of ramus of left mandible

Not billable — use a more specific codeRequires 7th character

S02.642 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it and add the required 7th character.

Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About S02.642

S02.642 is the ICD-10-CM diagnosis code for fracture of ramus of left 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 6 subcodes must be used instead.

Within S02.64 (fracture of ramus of mandible), S02.642 is specifically for fracture of ramus of left mandible. Related codes cover unspecified side (S02.640) and right mandible (S02.641).

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 was added in FY2017, effective October 1, 2016.

7th character

The appropriate 7th character is to be added to each code from category S02

  • Ainitial encounter for closed fractureS02.642A
  • Binitial encounter for open fractureS02.642B
  • Dsubsequent encounter for fracture with routine healingS02.642D
  • Gsubsequent encounter for fracture with delayed healingS02.642G
  • Ksubsequent encounter for fracture with nonunionS02.642K
  • SsequelaS02.642S

Notes that apply from higher levels

Instructions written at a parent level also apply to S02.642.

› 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.

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
  • FY2017 (effective 10/1/2016): Added
  • No changes since FY2017.

Common questions about S02.642

Is S02.642 billable?

No. S02.642 is a header code. Report one of its more specific subcodes instead.