W16.42XD vs X80

W16.42XD (Fall into unspecified water causing other injury, subsequent encounter) compared with X80 (Intentional self-harm by jumping from a high place), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.

Relationship

Conflict

Excludes1 conflict

W16.42XD

Fall into unspecified water causing other injury, subsequent encounter

↔

X80

Intentional self-harm by jumping from a high place

Not coded here — these two are mutually exclusive.

“intentional self-harm involving a fall (X80-X81)”

An Excludes1 note means the two conditions cannot occur together, so the pair should not be reported for the same encounter. The sole exception is when the conditions are documented as unrelated to each other.

Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a

Can these codes be reported together?

No — do not report together. W16.42XD carries an Excludes1 note covering X80: “intentional self-harm involving a fall (X80-X81)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Side by side

	W16.42XDFall into unspecified water causing other injury, subsequent encounter	X80Intentional self-harm by jumping from a high place
Billing status	Billable	Non-billable header Report instead: X80.XXXA, X80.XXXD, X80.XXXS
Classification	V00-Y99 — External Causes of Morbidity (V00-Y99)	V00-Y99 — External Causes of Morbidity (V00-Y99)
Definition	Fall into unspecified water causing other injury, subsequent encounter is a billable ICD-10-CM diagnosis code (W16.42D).	Intentional self-harm by jumping from a high place is a non-billable ICD-10-CM category code (X80).
7th character	The appropriate 7th character is to be added to each code from category W16	The appropriate 7th character is to be added to code X80
Includes	—	Intentional fall from one level to another

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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources