Z68.4 – Body mass index [BMI] 40 or greater, adult

ICD-10-CM 2027 diagnosis code · Body mass index [BMI] (Z68)

Non-billable header

ICD-10-CM code Z68.4

Code: Z68.4 (claims format: Z684)
Description: Body mass index [BMI] 40 or greater, adult
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 21. Factors influencing health status and contact with health services (Z00-Z99)
Block: Z68 Body mass index [BMI] (Z68)
Parent codes: Z68

Billable codes under Z68.4

Z68.4 is a header code and cannot be used on claims. Choose the most specific code:

Z68.41 – Body mass index [BMI] 40.0-44.9, adultBillable
Z68.42 – Body mass index [BMI] 45.0-49.9, adultBillable
Z68.43 – Body mass index [BMI] 50.0-59.9, adultBillable
Z68.44 – Body mass index [BMI] 60.0-69.9, adultBillable
Z68.45 – Body mass index [BMI] 70 or greater, adultBillable

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Z68 – Body mass index [BMI]

Applicable to:

Kilograms per meters squared

Notes:

BMI adult codes are for use for persons 20 years of age or older
BMI pediatric codes are for use for persons 2-19 years of age.
These percentiles are based on the growth charts published by the Centers for Disease Control and Prevention (CDC)

Related codes in Z68

Frequently asked questions

What is ICD-10 code Z68.4?

Z68.4 is the ICD-10-CM code for body mass index [BMI] 40 or greater, adult, in the block Z68 (Body mass index [BMI] (Z68)).

Is Z68.4 a billable code?

No. Z68.4 is a header code with more specific child codes; report one of the billable codes listed above.

What category does Z68.4 belong to?

It belongs to category Z68 – Body mass index [BMI].

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.