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ICD-10-CM 2027 diagnosis code

S02.401Maxillary fracture, unspecified side

Not billable — use a more specific codeRequires 7th character

S02.401 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 S02.401

S02.401 is the ICD-10-CM diagnosis code for maxillary fracture, unspecified side. 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 S02.40, choose S02.401 (Maxillary fracture, unspecified side) only when documentation doesn't support a more specific option: malar fracture, unspecified side (S02.400), zygomatic fracture, unspecified side (S02.402), malar fracture, right side (S02.40A), malar fracture, left side (S02.40B), maxillary fracture, right side (S02.40C), maxillary fracture, left side (S02.40D), zygomatic fracture, right side (S02.40E) and zygomatic fracture, left side (S02.40F).

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 changed in FY2017 (title revised).

7th character

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

  • Ainitial encounter for closed fractureS02.401A
  • Binitial encounter for open fractureS02.401B
  • Dsubsequent encounter for fracture with routine healingS02.401D
  • Gsubsequent encounter for fracture with delayed healingS02.401G
  • Ksubsequent encounter for fracture with nonunionS02.401K
  • SsequelaS02.401S

Notes that apply from higher levels

Instructions written at a parent level also apply to S02.401.

› 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 S02.401.

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)
  • FY2017 (effective 10/1/2016): Title revised — was “Maxillary fracture, unspecified”

Common questions about S02.401

Is S02.401 billable?

No. S02.401 is a header code. Report one of its more specific subcodes instead.