S00.542

S00.542: External constriction of oral cavity

Non-billable headerICD-10-CM

S00.542 is a non-billable header ICD-10-CM code for external constriction of oral cavity. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category S00

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above S00.542

A category’s note binds every code beneath it.

Written on S00: Superficial injury of head

diffuse cerebral contusion (S06.2-)
focal cerebral contusion (S06.3-)
injury of eye and orbit (S05.-)
open wound of head (S01.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

Constriction›external›alveolar process
Constriction›external›gum
Constriction›external›mouth
Constriction›external›oral cavity
Constriction›external›palate
Constriction›external›tongue
Constriction›external›uvula
Constriction›external›cheek›internal
Constriction›external›head›oral cavity

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead S00.542

3 child codes. Green means billable.

Other codes under S00.54

S00.541External constriction of lip