Is X38 a billable ICD-10-CM code?

No. X38 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does X38 sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Exposure to forces of nature (X30-X39).

What cannot be coded together with X38?

X38 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

X38

X38 — Flood

Non-billable headerICD-10-CM

X38 is a non-billable header ICD-10-CM code for flood. 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 X38

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.

collapse of dam or man-made structure causing earth movement (X36.0)
tidal wave NOS (X37.41)
tidal wave caused by storm (X37.42)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Flood arising from remote storm
Flood of cataclysmic nature arising from melting snow
Flood resulting directly from storm

Risk adjustment

X38 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 X38 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 X38.

Flood(any injury) (caused by)
Forces of nature›flood(caused by)
Forces of nature›cataclysmic storm›with flood

Code to one of these instead X38

3 child codes. Green means billable.

Questions about X38

Is X38 a billable ICD-10-CM code?: No. X38 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does X38 sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Exposure to forces of nature (X30-X39).
What cannot be coded together with X38?: X38 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.