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ICD-10-CM 2027

ICD-10 code for sea sickness

T75.3

Motion sickness

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Sickness › sea”. Page updated September 29, 2026.

About coding sea sickness

The ICD-10-CM code for sea sickness is T75.3 (Motion sickness).

Within T75 (other and unspecified effects of other external causes), T75.3 is specifically for motion sickness. Related codes cover effects of lightning (T75.0), unspecified effects of drowning and nonfatal submersion (T75.1), effects of vibration (T75.2), electrocution (T75.4) and other specified effects of external causes (T75.8).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

Use an additional code for: external cause code to identify vehicle or type of motion (Y92.81-).

Common questions about sea sickness ICD-10 codes

What is the ICD-10 code for sea sickness?

T75.3 — Motion sickness (a header code; report a more specific subcode).

Is T75.3 billable?

No. T75.3 is a header code. Report one of its more specific subcodes instead.