Is Z15.2 a billable ICD-10-CM code?

Yes. Z15.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does Z15.2 sit in the tabular list?

Factors influencing health status and contact with health services (Z00-Z99), in the block Genetic carrier and genetic susceptibility to disease (Z14-Z15).

What cannot be coded together with Z15.2?

Z15.2 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above Z15.2 (Z15) and apply to it just the same.

Z15.2

Z15.2 — Genetic susceptibility to obesity

Billable / specific codeICD-10-CMPOA exempt

Z15.2 is a billable, specific ICD-10-CM code for genetic susceptibility to obesity. It is valid for submission on a claim.

Use additional code

Add a secondary code to capture the detail described below.

code to identify body mass index (BMI), if known (Z68.-)

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

, if applicable, any associated manifestations, such as:
other obesity (E66.8-)
polyphagia (R63.2)

Excludes1 inherited from the categories above Z15.2

These are not written on Z15.2, but they bind it: a note on a category applies to every code beneath it. Billing Z15.2 with anything listed here is a denial.

Written on Z15 — Genetic susceptibility to disease

chromosomal anomalies (Q90-Q99)

Risk adjustment

Z15.2 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 Z15.2 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 Z15.2.

Genetic›susceptibility to disease NEC›obesity

Code history

What changed, and when. Derived by diffing consecutive CMS release files — which matters when you are defending a code assigned under an earlier edition.

addedFY2024-FY2026
Genetic susceptibility to obesity

Related codes at this level

Codes that share Z15. If Z15.2 is not quite right, the correct code is usually one of these.

Questions about Z15.2

Is Z15.2 a billable ICD-10-CM code?: Yes. Z15.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Z15.2 sit in the tabular list?: Factors influencing health status and contact with health services (Z00-Z99), in the block Genetic carrier and genetic susceptibility to disease (Z14-Z15).
What cannot be coded together with Z15.2?: Z15.2 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above Z15.2 (Z15) and apply to it just the same.