AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2026 Quarter 4; Z Codes Update
Z Codes Update
New Z codes in Chapter 21, Factors influencing Health Status and Contact with Health Services, were created as noted below: Status Code Z68.1 , Body mass index [BMI] 19.9 or less, adult, was expanded with new codes to further specify low body mass index for adults who are underweight. Z68.18 Body mass index [BMI] 18.4 or less, adult Z68.19 Body mass index [BMI] 18.5 - 19.9 , adult BMI is a measure that is used to assess an individual’s health. The Centers for Disease Control and Prevention defines underweight in adults as...