Z68.21 – Body mass index [BMI] 21.0-21.9, adult

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

Billable code

ICD-10-CM code Z68.21

Code: Z68.21 (claims format: Z6821)
Description: Body mass index [BMI] 21.0-21.9, adult
Billable: Yes – valid for HIPAA-covered transactions
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 › Z68.2

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)

Index terms for Z68.21

Entries in the ICD-10-CM alphabetic index that lead to this code:

Body, bodies, mass index, adult, 21.0-21.9

Related codes in Z68.2

Z68.20 – Body mass index [BMI] 20.0-20.9, adultBillable
Z68.22 – Body mass index [BMI] 22.0-22.9, adultBillable
Z68.23 – Body mass index [BMI] 23.0-23.9, adultBillable
Z68.24 – Body mass index [BMI] 24.0-24.9, adultBillable
Z68.25 – Body mass index [BMI] 25.0-25.9, adultBillable
Z68.26 – Body mass index [BMI] 26.0-26.9, adultBillable
Z68.27 – Body mass index [BMI] 27.0-27.9, adultBillable
Z68.28 – Body mass index [BMI] 28.0-28.9, adultBillable
Z68.29 – Body mass index [BMI] 29.0-29.9, adultBillable

Frequently asked questions

What is ICD-10 code Z68.21?

Z68.21 is the ICD-10-CM code for body mass index [BMI] 21.0-21.9, adult, in the block Z68 (Body mass index [BMI] (Z68)).

Is Z68.21 a billable code?

Yes. Z68.21 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does Z68.21 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.