S00.521⚠ Requires 7th Character

Blister (nonthermal) of lip

⚠ 7th Character Required

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

This code is not valid for billing without a 7th character. Append one of the following to S00.521:

Ainitial encounterS00.521ADsubsequent encounterS00.521DSsequelaS00.521S

Code Hierarchy

┌19Injury, poisoning and certain other consequences of external causes (S00-T88)├S00-S09Injuries to the head (S00-S09)├S00Superficial injury of head
└S00.521Blister (nonthermal) of lip

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