W16.91XA vs Y01

W16.91XA (Jumping or diving into unspecified water causing drowning and submersion, initial encounter) compared with Y01 (Assault by pushing from 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

W16.91XA

Jumping or diving into unspecified water causing drowning and submersion, initial encounter

↔

Y01

Assault by pushing from high place

Not coded here — these two are mutually exclusive.

“assault involving a fall (Y01-Y02)”

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. W16.91XA carries an Excludes1 note covering Y01: “assault involving a fall (Y01-Y02)”

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

	W16.91XAJumping or diving into unspecified water causing drowning and submersion, initial encounter	Y01Assault by pushing from high place
Billing status	Billable	Non-billable header Report instead: Y01.XXXA, Y01.XXXD, Y01.XXXS
Classification	V00-Y99 — External Causes of Morbidity (V00-Y99)	V00-Y99 — External Causes of Morbidity (V00-Y99)
Definition	Jumping or diving into unspecified water causing drowning and submersion, initial encounter is a billable ICD-10-CM diagnosis code (W16.91A).	Assault by pushing from high place is a non-billable ICD-10-CM category code (Y01).
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 Y01
Includes	—	homicide injuries inflicted by another person with intent to injure or kill, by any means

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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