Drowning and submersion due to unpowr wtrcrft sinking, subs

This code signifies an injury or adverse health effect resulting from a near-drowning or submersion incident involving an unpowered watercraft (e.g., canoe, rowboat, raft) that sank. The "subsequent encounter" designation indicates that the patient is receiving follow-up care for conditions related to the initial event, not the initial treatment. This could include ongoing respiratory issues, neurological sequelae, or other complications.

Apply this code when a patient presents for follow-up treatment of injuries or conditions sustained during a prior drowning or submersion incident involving a sinking unpowered watercraft. This includes situations where the patient is being monitored for long-term effects, receiving rehabilitation, or undergoing further diagnostic workup related to the initial event. Do not use for the initial acute care of the drowning episode.

• Ensure documentation clearly specifies "subsequent encounter" to justify the 7th character 'D'.
• Always code the specific sequelae or injuries resulting from the drowning (e.g., anoxic brain injury, aspiration pneumonia) in addition to this external cause code.
• Verify the type of watercraft involved was unpowered and that the incident involved sinking, not just capsizing or falling overboard without the vessel sinking.