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ICD-10-CM 2027 diagnosis code

S01.45Open bite of cheek and temporomandibular area

Not billable — use a more specific codeRequires 7th character

S01.45 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.

Looking up by condition? See ICD-10 code for Cheek external bite.

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 S01.45

S01.45 is the ICD-10-CM diagnosis code for open bite of cheek and temporomandibular area. It belongs to category S01 (open wound 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 3 subcodes must be used instead.

Within S01.4 (open wound of cheek and temporomandibular area), S01.45 is specifically for open bite of cheek and temporomandibular area. Related codes cover unspecified open wound of cheek and temporomandibular area (S01.40), laceration without foreign body of cheek and temporomandibular area (S01.41), laceration with foreign body of cheek and temporomandibular area (S01.42), puncture wound without foreign body of cheek and temporomandibular area (S01.43) and puncture wound with foreign body of cheek and temporomandibular area (S01.44).

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.

The conditions in its Excludes2 note aren't part of S01.45, but may be coded alongside it if the patient has both: superficial bite of cheek and temporomandibular area (S00.86, S00.87).

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 S01

  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Coding notes

Applicable toConditions and synonyms classified to this code
  • Bite of cheek and temporomandibular area NOS
Excludes2Not included here — may be reported together if both conditions exist
  • superficial bite of cheek and temporomandibular area (S00.86, S00.87)

Notes that apply from higher levels

Instructions written at a parent level also apply to S01.45.

› From S01 Open wound of head
Excludes1
  • open skull fracture (S02.- with 7th character B)
Excludes2
  • injury of eye and orbit (S05.-)
  • traumatic amputation of part of head (S08.-)
Code also
  • any associated:
  • injury of cranial nerve (S04.-)
  • injury of muscle and tendon of head (S09.1-)
  • intracranial injury (S06.-)
  • wound infection

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 S01.45.

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 S01.45

Is S01.45 billable?

No. S01.45 is a header code. Report one of its more specific subcodes instead.