Z68.1

ICD-10Billable

Body mass index [BMI] 19.9 or less, adult

Official ICD-10-CM descriptor (FY2026)

Body mass index [BMI] 19.9 or less, adult

Z68.1 is valid for submission on a claim — CMS flags it as a billable, specific code.

Related codes in Z68

Z68.2Body mass index [BMI] 20-29, adultcategory
Z68.3Body mass index [BMI] 30-39, adultcategory
Z68.4Body mass index [BMI] 40 or greater, adultcategory
Z68.5Body mass index [BMI] pediatriccategory

Where this code sits

Chapter: 21. Factors influencing health status and contact with health services (Z00-Z99)
Block: Body mass index [BMI] (Z68)
Parent code: Z68

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.