Drown in natural water, undetermined intent, sequela

This code signifies the long-term effects or complications arising from a past incident of drowning or submersion in natural bodies of water, such as oceans, lakes, or rivers, where the intent of the incident (accidental, intentional, or assault) could not be determined. These sequelae can include neurological damage, respiratory issues, or other chronic conditions directly attributable to the original event.

Apply this code when documenting a patient's current medical condition that is a direct consequence of a previous drowning or submersion in natural water, and the original incident's intent was never definitively established. This is used for follow-up care and management of chronic problems stemming from such an event, not for the initial acute episode.

• Always sequence this sequela code after the code(s) for the specific condition(s) being treated (e.g., anoxic brain injury).
• Ensure documentation clearly links the current condition to the past drowning/submersion event.
• Verify that the original incident occurred in a natural body of water and that intent was truly undetermined.