Insect bite (nonvenomous) of unspecified thumb, sequela

This code signifies a long-term or late effect resulting from a nonvenomous insect bite on an unspecified thumb. It indicates that the initial injury has resolved, but residual symptoms or conditions persist due to the original bite.

Apply this code when documenting a patient presenting with a chronic condition, scar, or other lasting consequence directly attributable to a past nonvenomous insect bite on the thumb. This would be used after the acute phase of the bite has passed.

• Always assign a seventh character of 'S' for sequela when the residual effect of the bite is being treated.
• Do not use this code for acute insect bites; those require an initial encounter or subsequent encounter seventh character.
• Consider additional codes for specific sequelae, such as scar formation (e.g., L90.5) or chronic dermatitis (e.g., L30.9), if applicable.