Is S00.542 a billable code?
No. S00.542 is a header code that groups 3 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
S00.542: External constriction of oral cavity
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
S00.542 groups related diagnoses under external constriction of oral cavity. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under S00.542
- S00.542AExternal constriction of oral cavity, initial encounter
- S00.542DExternal constriction of oral cavity, subsequent encounter
- S00.542SExternal constriction of oral cavity, sequela
Other codes in S00.54 External constriction of lip and oral cavity
S00.542 questions
What does S00.542 mean?
S00.542 is the ICD-10-CM code for External constriction of oral cavity. It is in chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.