2026 ICD-10-CM Diagnosis Code Z68Body mass index [BMI]

ICD-10-CM Codes›Z00–Z99›BMI›Z68

ICD-10-CM Z68
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z68 is a non-billable ICD-10-CM category code for body mass index [BMI], so it cannot be submitted on claims. Use a more specific code from this category instead, such as Z68.1, Z68.20, Z68.21, and Z68.22.

Code Identity

ICD-10-CM Code
Z68
Billable Status
No — Non-Billable Category
Code Describes
Body mass index [BMI]
Chapter
BMI
Body mass index (Z68)

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionBMIBody mass index (Z68)
CategoryZ68Body mass index [BMI]
This CodeZ68Body mass index [BMI]

Specific Coding for Body mass index [BMI]Overview

Non-specific codes like Z68 require more characters. Use one of these billable codes instead:

  • Use Z68.1 for Body mass index [BMI] 19.9 or less, adult

  • Z68.2 for Body mass index [BMI] 20-29, adult

  • Use Z68.20 for Body mass index [BMI] 20.0-20.9, adult

  • Use Z68.21 for Body mass index [BMI] 21.0-21.9, adult

  • Use Z68.22 for Body mass index [BMI] 22.0-22.9, adult

  • Use Z68.23 for Body mass index [BMI] 23.0-23.9, adult

  • Use Z68.24 for Body mass index [BMI] 24.0-24.9, adult

  • Use Z68.25 for Body mass index [BMI] 25.0-25.9, adult

  • Use Z68.26 for Body mass index [BMI] 26.0-26.9, adult

  • Use Z68.27 for Body mass index [BMI] 27.0-27.9, adult

  • Use Z68.28 for Body mass index [BMI] 28.0-28.9, adult

  • Use Z68.29 for Body mass index [BMI] 29.0-29.9, adult

  • Z68.3 for Body mass index [BMI] 30-39, adult

  • Use Z68.30 for Body mass index [BMI] 30.0-30.9, adult

  • Use Z68.31 for Body mass index [BMI] 31.0-31.9, adult

  • Use Z68.32 for Body mass index [BMI] 32.0-32.9, adult

  • Use Z68.33 for Body mass index [BMI] 33.0-33.9, adult

  • Use Z68.34 for Body mass index [BMI] 34.0-34.9, adult

  • Use Z68.35 for Body mass index [BMI] 35.0-35.9, adult

  • Use Z68.36 for Body mass index [BMI] 36.0-36.9, adult

  • Use Z68.37 for Body mass index [BMI] 37.0-37.9, adult

  • Use Z68.38 for Body mass index [BMI] 38.0-38.9, adult

  • Use Z68.39 for Body mass index [BMI] 39.0-39.9, adult

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

  • Use Z68.41 for Body mass index [BMI] 40.0-44.9, adult

  • Use Z68.42 for Body mass index [BMI] 45.0-49.9, adult

  • Use Z68.43 for Body mass index [BMI] 50.0-59.9, adult

  • Use Z68.44 for Body mass index [BMI] 60.0-69.9, adult

  • Use Z68.45 for Body mass index [BMI] 70 or greater, adult

  • Z68.5 for Body mass index [BMI] pediatric

  • Use Z68.51 for Body mass index [BMI] pediatric, less than 5th percentile for age

  • Use Z68.52 for Body mass index [BMI] pediatric, 5th percentile to less than 85th percentile for age

  • Use Z68.53 for Body mass index [BMI] pediatric, 85th percentile to less than 95th percentile for age

  • Use Z68.54 for Body mass index [BMI] pediatric, 95th percentile for age to less than 120% of the 95th percentile for age

  • Use Z68.55 for Body mass index [BMI] pediatric, 120% of the 95th percentile for age to less than 140% of the 95th percentile for age

  • Use Z68.56 for Body mass index [BMI] pediatric, greater than or equal to 140% of the 95th percentile for age

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Kilograms per meters squared

  • 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)

Clinical InformationClinical

  • Body Mass Index

    an indicator of body density as determined by the relationship of body weight to body height. bmi=weight (kg)/height squared (m2). bmi correlates with body fat (adipose tissue). their relationship varies with age and gender. for adults, bmi falls into these categories: below 18.5 (underweight); 18.5-24.9 (normal); 25.0-29.9 (overweight); 30.0 and above (obese). (national center for health statistics, centers for disease control and prevention)

  • Obesity Paradox

    an observation that high body mass index is sometimes associated with lower cardiovascular disease mortality in certain population, e.g., elderly.

Patient EducationClinical

Body Weight

Body weight is the total mass of your body. Keeping track of your weight is one way to check for changes in your health, but it can't tell you the whole story. That's because your weight includes muscle, bone, fat, and water. Also, everyday factors can play a role in your weight, such as your:

The full article covers:

  • What is body weight?
  • What factors help determine a healthy body weight?
  • What are body weight ranges?
  • What if I have a sudden gain or loss of weight?
  • How can I maintain a healthy body weight?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z68Overview

Is Z68 (Body mass index [BMI]) a billable code?

No. This is a category header that groups the codes for body mass index [BMI], and headers cannot be submitted on claims. Claims for body mass index [BMI] need a more specific code from this category, such as Z68.1, Z68.20, and Z68.21.