Is S00.521 a billable code?
No. S00.521 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
S00.521: Blister (nonthermal) of lip
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
S00.521 groups related diagnoses under blister (nonthermal) of lip. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under S00.521
- S00.521ABlister (nonthermal) of lip, initial encounter
- S00.521DBlister (nonthermal) of lip, subsequent encounter
- S00.521SBlister (nonthermal) of lip, sequela
Other codes in S00.52 Blister (nonthermal) of lip and oral cavity
S00.521 questions
What does S00.521 mean?
S00.521 is the ICD-10-CM code for Blister (nonthermal) of lip. 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.