Heat exposure on board passenger ship, sequela

This code describes the long-term effects or complications arising from a patient's past exposure to excessive heat while on a passenger ship. These sequelae could manifest as chronic heat-related illnesses, organ damage, or other persistent health issues directly attributable to the original heat exposure incident.

Apply this code when documenting a patient presenting with a current condition that is a direct consequence of a heat exposure event that occurred previously on a passenger ship. This is appropriate for follow-up visits or when the sequela is the primary reason for the encounter, rather than the acute heat exposure itself.

• 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 heat exposure on a passenger ship.
• Do not use for acute heat exposure; this code is exclusively for sequelae.