ICD-10-CM 2027 diagnosis code
Z68Body mass index [BMI]
Z68 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About Z68
Z68 is the ICD-10-CM diagnosis code for body mass index [BMI]. It belongs to block Z68 (body mass index [BMI]) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: Z68.1 (19.9 or less, adult), Z68.2 (20-29, adult), Z68.3 (30-39, adult), Z68.4 (40 or greater, adult) and Z68.5 (pediatric).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under Z68
- Z68.1Body mass index [BMI] 19.9 or less, adult
- Z68.2Body mass index [BMI] 20-29, adult
- Z68.20Body mass index [BMI] 20.0-20.9, adultBillable
- Z68.21Body mass index [BMI] 21.0-21.9, adultBillable
- Z68.22Body mass index [BMI] 22.0-22.9, adultBillable
- Z68.23Body mass index [BMI] 23.0-23.9, adultBillable
- Z68.24Body mass index [BMI] 24.0-24.9, adultBillable
- Z68.25Body mass index [BMI] 25.0-25.9, adultBillable
- Z68.26Body mass index [BMI] 26.0-26.9, adultBillable
- Z68.27Body mass index [BMI] 27.0-27.9, adultBillable
- Z68.28Body mass index [BMI] 28.0-28.9, adultBillable
- Z68.29Body mass index [BMI] 29.0-29.9, adultBillable
- Z68.3Body mass index [BMI] 30-39, adult
- Z68.30Body mass index [BMI] 30.0-30.9, adultBillable
- Z68.31Body mass index [BMI] 31.0-31.9, adultBillable
- Z68.32Body mass index [BMI] 32.0-32.9, adultBillable
- Z68.33Body mass index [BMI] 33.0-33.9, adultBillable
- Z68.34Body mass index [BMI] 34.0-34.9, adultBillable
- Z68.35Body mass index [BMI] 35.0-35.9, adultBillable
- Z68.36Body mass index [BMI] 36.0-36.9, adultBillable
- Z68.37Body mass index [BMI] 37.0-37.9, adultBillable
- Z68.38Body mass index [BMI] 38.0-38.9, adultBillable
- Z68.39Body mass index [BMI] 39.0-39.9, adultBillable
- Z68.4Body mass index [BMI] 40 or greater, adult
- Z68.5Body mass index [BMI] pediatric
- Z68.51Body mass index [BMI] pediatric, less than 5th percentile for ageBillable
- Z68.52Body mass index [BMI] pediatric, 5th percentile to less than 85th percentile for ageBillable
- Z68.53Body mass index [BMI] pediatric, 85th percentile to less than 95th percentile for ageBillable
- Z68.54Body mass index [BMI] pediatric, 95th percentile for age to less than 120% of the 95th percentile for ageBillable
- Z68.55Body mass index [BMI] pediatric, 120% of the 95th percentile for age to less than 140% of the 95th percentile for ageBillable
- Z68.56Body mass index [BMI] pediatric, greater than or equal to 140% of the 95th percentile for ageBillable
Coding 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)
- Kilograms per meters squared
Notes that apply from higher levels
Instructions written at a parent level also apply to Z68.
Broader instructions also apply from Chapter 21: Factors influencing health status and contact with health services.
Codes whose notes reference Z68
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about Z68
Is Z68 billable?
- No. Z68 is a header code. Report one of its more specific subcodes instead.