Heat exposure on board merchant ship, subsequent encounter

This code signifies a patient presenting for follow-up care, sequelae, or recovery related to an injury or illness caused by excessive heat exposure while working or traveling on a commercial vessel. This could include conditions such as heat stroke, heat exhaustion, heat cramps, or other heat-related illnesses. The "subsequent encounter" indicates that the initial treatment for the acute event has already occurred.

Use this code for any encounter after the initial treatment for a heat-related illness sustained on a merchant ship. This includes visits for medication adjustments, physical therapy for lingering effects, or follow-up appointments to monitor recovery. It is appropriate when the patient is no longer in the acute phase of the heat exposure.

• Always assign an additional code for the specific heat-related condition (e.g., T67.0XXA for heatstroke).
• Ensure documentation clearly states the patient is on a merchant ship and this is not the initial encounter.
• Do not use for initial treatment of the heat exposure; a code with an "A" for initial encounter would be appropriate then.