Is X73 a billable ICD-10-CM code?

No. X73 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does X73 sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Intentional self-harm (X71-X83).

What cannot be coded together with X73?

X73 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

X73

X73 — Intentional self-harm by rifle, shotgun and larger firearm discharge

Non-billable headerICD-10-CM

X73 is a non-billable header ICD-10-CM code for intentional self-harm by rifle, shotgun and larger firearm discharge. 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 each code from category X73

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.

airgun (X74.01)

Other codes that can never be billed with X73

These codes carry an Excludes1 note pointing at X73. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading X73 alone.

W33Accidental rifle, shotgun and larger firearm discharge and malfunction

Risk adjustment

X73 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.

Code to one of these instead X73

5 child codes. Green means billable.

Questions about X73

Is X73 a billable ICD-10-CM code?: No. X73 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does X73 sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Intentional self-harm (X71-X83).
What cannot be coded together with X73?: X73 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.