Is W65 a billable ICD-10-CM code?

No. W65 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does W65 sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Accidental non-transport drowning and submersion (W65-W74).

What cannot be coded together with W65?

W65 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

W65

W65 — Accidental drowning and submersion while in bath-tub

Non-billable headerICD-10-CM

W65 is a non-billable header ICD-10-CM code for accidental drowning and submersion while in bath-tub. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to code W65

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

accidental drowning and submersion due to fall in (into) bathtub (W16.211)

Other codes that can never be billed with W65

These codes carry an Excludes1 note pointing at W65. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading W65 alone.

W16Fall, jump or diving into water
W16.211Fall in (into) filled bathtub causing drowning and submersion
W16.211AFall in (into) filled bathtub causing drowning and submersion, initial encounter
W16.211DFall in (into) filled bathtub causing drowning and submersion, subsequent encounter
W16.211SFall in (into) filled bathtub causing drowning and submersion, sequela

Risk adjustment

W65 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

How W65 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to W65.

Drowning›in›bathtub(accidental)

Code to one of these instead W65

3 child codes. Green means billable.

Questions about W65

Is W65 a billable ICD-10-CM code?: No. W65 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does W65 sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Accidental non-transport drowning and submersion (W65-W74).
What cannot be coded together with W65?: W65 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.