Z68
Non-Billable

Body mass index [BMI]

Non-Billable / Non-Specific Code

What is Body mass index [BMI]?

ICD-10-CM Z68 is the diagnosis code for Body mass index [BMI]. This code falls under the section "Body mass index (BMI)" within Chapter 21 — Factors influencing health status and contact with health services (Z00-Z99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

💡 Inclusions

Coding Guidelines for Z68

✅ This Code Includes

  • Kilograms per meters squared

ICD-10-CM Code Hierarchy

Understanding where Z68 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 5 entries
Z68.1Body mass index [BMI] 19.9 or less, adultBillableZ68.2Body mass index [BMI] 20-29, adultNon-BillableZ68.20Body mass index [BMI] 20.0-20.9, adultBillableZ68.21Body mass index [BMI] 21.0-21.9, adultBillableZ68.22Body mass index [BMI] 22.0-22.9, adultBillableZ68.23Body mass index [BMI] 23.0-23.9, adultBillableZ68.24Body mass index [BMI] 24.0-24.9, adultBillableZ68.25Body mass index [BMI] 25.0-25.9, adultBillableZ68.26Body mass index [BMI] 26.0-26.9, adultBillableZ68.27Body mass index [BMI] 27.0-27.9, adultBillableZ68.28Body mass index [BMI] 28.0-28.9, adultBillableZ68.29Body mass index [BMI] 29.0-29.9, adultBillableZ68.3Body mass index [BMI] 30-39, adultNon-BillableZ68.30Body mass index [BMI] 30.0-30.9, adultBillableZ68.31Body mass index [BMI] 31.0-31.9, adultBillableZ68.32Body mass index [BMI] 32.0-32.9, adultBillableZ68.33Body mass index [BMI] 33.0-33.9, adultBillableZ68.34Body mass index [BMI] 34.0-34.9, adultBillableZ68.35Body mass index [BMI] 35.0-35.9, adultBillableZ68.36Body mass index [BMI] 36.0-36.9, adultBillableZ68.37Body mass index [BMI] 37.0-37.9, adultBillableZ68.38Body mass index [BMI] 38.0-38.9, adultBillableZ68.39Body mass index [BMI] 39.0-39.9, adultBillableZ68.4Body mass index [BMI] 40 or greater, adultNon-BillableZ68.41Body mass index [BMI] 40.0-44.9, adultBillableZ68.42Body mass index [BMI] 45.0-49.9, adultBillableZ68.43Body mass index [BMI] 50.0-59.9, adultBillableZ68.44Body mass index [BMI] 60.0-69.9, adultBillableZ68.45Body mass index [BMI] 70 or greater, adultBillableZ68.5Body mass index [BMI] pediatricNon-BillableZ68.51Body mass index [BMI] pediatric, less than 5th percentile for ageBillableZ68.52Body mass index [BMI] pediatric, 5th percentile to less than 85th percentile for ageBillableZ68.53Body mass index [BMI] pediatric, 85th percentile to less than 95th percentile for ageBillableZ68.54Body mass index [BMI] pediatric, 95th percentile for age to less than 120% of the 95th percentile for ageBillableZ68.55Body mass index [BMI] pediatric, 120% of the 95th percentile for age to less than 140% of the 95th percentile for ageBillableZ68.56Body mass index [BMI] pediatric, greater than or equal to 140% of the 95th percentile for ageBillable
Related Codes

Frequently Asked Questions

Is Z68 a billable ICD-10-CM code?

No, Z68 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does Z68 mean?

Z68 is the ICD-10-CM diagnosis code for "Body mass index [BMI]". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What section is Z68 in?

Z68 is located in Section Z68 — "Body mass index (BMI)" within Chapter 21 of the ICD-10-CM Tabular List.

What are the sub-codes of Z68?

Z68 has 5 sub-code(s) that provide more specific detail: Z68.1, Z68.2, Z68.3, Z68.4, Z68.5.

When should I use Z68?

Use Z68 when the patients documented diagnosis matches "Body mass index [BMI]" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Body mass index [BMI]?

The ICD-10-CM code for Body mass index [BMI] is Z68.

Can Z68 be used for primary diagnosis?

No, Z68 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is Z68 in?

Z68 is in Chapter 21 of the ICD-10-CM Tabular List.

Is Z68 valid for 2026?

Yes, Z68 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousZ67.A4Duffy a and b positiveNext →Z68.1Body mass index [BMI] 19.9 or less, adult
Code Details
Z68
Body mass index [BMI]
Non-Billable / Non-Specific Code
21 — Factors influencing health status and contact with health services (Z00-Z99)
Z68 — Body mass index (BMI)
2026 ICD-10-CM