Effect of heat and light, unspecified, subsequent encounter

This code indicates a health problem resulting from exposure to excessive heat or light, where the specific type of heat or light effect is not documented. It is used when the patient is receiving follow-up care for such an unspecific condition, after the initial treatment has been completed.

This code is appropriate for subsequent encounters when a patient presents for ongoing management or evaluation of a heat- or light-related condition that was not precisely identified at the time of initial diagnosis. Examples include follow-up for generalized heat exhaustion or a non-specific sunburn, where the initial injury has already been addressed.

• Only use this code for follow-up care; an initial encounter would require a different seventh character.
• Avoid this code if a more specific heat or light effect (e.g., heatstroke, specific degree of sunburn) is documented.
• Ensure documentation supports the "unspecified" nature of the effect and the "subsequent encounter" status.