Exposure to excessive natural heat, subsequent encounter

This code indicates that a patient is being seen for a health problem resulting from previous overexposure to natural environmental heat, such as from a heatwave or prolonged sun exposure. The encounter is for follow-up care, management of residual effects, or treatment of complications that arose after the initial exposure.

Use this code when a patient presents for a subsequent visit related to conditions like heatstroke, heat exhaustion, or severe sunburn that occurred due to natural heat. This applies to encounters for ongoing treatment, monitoring of recovery, or addressing delayed complications such as renal failure or neurological deficits stemming from the initial heat exposure.

• Always use in conjunction with a code for the specific condition (e.g., T67.0XXA for heatstroke).
• Ensure the encounter is not the initial treatment for the acute injury; otherwise, an initial encounter (A) or subsequent encounter (D) for the specific injury code would be more appropriate.
• Verify documentation clearly indicates the heat exposure was from natural sources, not artificial heat.