Z68.1: Body mass index [BMI] 19.9 or less, adult

No longer billable · FY2027

Not billable: this is a header. Use one of the more specific codes below.

• No longer billable from October 1, 2026: it became a header for more specific codes: Z68.18, Z68.19.

Code breakdown

Coding notes

Inclusion terms (from Z68)

• Kilograms per meters squared

Notes (from Z68)

• 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)

Codes under Z68.1

• Z68.18 Body mass index [BMI] 18.4 or less, adult
• Z68.19 Body mass index [BMI] 18.5-19.9, adult

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All FY2027 ICD-10-CM changes

ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.