Other heatstroke and sunstroke, sequela

This code signifies the long-term or residual effects resulting from a past episode of heatstroke or sunstroke, excluding those specifically classified as heatstroke with central nervous system involvement. These sequelae can manifest in various organ systems and may include chronic fatigue, cognitive deficits, or persistent organ damage that developed as a direct consequence of the original heat-related illness.

Apply this code when documenting conditions that are a direct and lasting consequence of a previously treated heatstroke or sunstroke. This is appropriate for patients presenting with chronic symptoms or complications clearly attributed to a past severe heat exposure event, after the acute phase of the original illness has resolved.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a past heatstroke or sunstroke event.
• The "S" in the 7th character indicates sequela, meaning the residual effect of a past condition.