ICD-10-CM category Z68
Body mass index [BMI]: every Z68 code with its CMS-HCC V28 status
Z68, Body mass index [BMI], holds 37 codes in the FY2026 ICD-10-CM set: 32 billable codes and 5 header codes that need a further character. 6 of them maps to a CMS-HCC V28 payment category (HCC 48) for payment year 2026. The other 26 billable codes carry no V28 HCC and do not risk-adjust.
CMS-HCC V28 categories in Z68 (1)
Coefficients are the code-level reference values from the CMS V28 factor file (community, non-dual, aged), not a member's score. Hierarchy, interactions, and enrollment segment decide what a documented condition contributes.
All 37 Z68 codes (FY2026)
Descriptors are the FY2026 order-file text. Header codes need a further character and cannot be reported; open any billable code for its tabular notes, MEAT guidance, and mapping detail.
| Code | Description | FY2026 | CMS-HCC V28 |
|---|---|---|---|
| Z68 | Body mass index [BMI] | Header | Header code, not reportable |
| Z68.1 | Body mass index [BMI] 19.9 or less, adult | Billable | No V28 HCC |
| Z68.2 | Body mass index [BMI] 20-29, adult | Header | Header code, not reportable |
| Z68.20 | Body mass index [BMI] 20.0-20.9, adult | Billable | No V28 HCC |
| Z68.21 | Body mass index [BMI] 21.0-21.9, adult | Billable | No V28 HCC |
| Z68.22 | Body mass index [BMI] 22.0-22.9, adult | Billable | No V28 HCC |
| Z68.23 | Body mass index [BMI] 23.0-23.9, adult | Billable | No V28 HCC |
| Z68.24 | Body mass index [BMI] 24.0-24.9, adult | Billable | No V28 HCC |
| Z68.25 | Body mass index [BMI] 25.0-25.9, adult | Billable | No V28 HCC |
| Z68.26 | Body mass index [BMI] 26.0-26.9, adult | Billable | No V28 HCC |
| Z68.27 | Body mass index [BMI] 27.0-27.9, adult | Billable | No V28 HCC |
| Z68.28 | Body mass index [BMI] 28.0-28.9, adult | Billable | No V28 HCC |
| Z68.29 | Body mass index [BMI] 29.0-29.9, adult | Billable | No V28 HCC |
| Z68.3 | Body mass index [BMI] 30-39, adult | Header | Header code, not reportable |
| Z68.30 | Body mass index [BMI] 30.0-30.9, adult | Billable | No V28 HCC |
| Z68.31 | Body mass index [BMI] 31.0-31.9, adult | Billable | No V28 HCC |
| Z68.32 | Body mass index [BMI] 32.0-32.9, adult | Billable | No V28 HCC |
| Z68.33 | Body mass index [BMI] 33.0-33.9, adult | Billable | No V28 HCC |
| Z68.34 | Body mass index [BMI] 34.0-34.9, adult | Billable | No V28 HCC |
| Z68.35 | Body mass index [BMI] 35.0-35.9, adult | Billable | No V28 HCC |
| Z68.36 | Body mass index [BMI] 36.0-36.9, adult | Billable | No V28 HCC |
| Z68.37 | Body mass index [BMI] 37.0-37.9, adult | Billable | No V28 HCC |
| Z68.38 | Body mass index [BMI] 38.0-38.9, adult | Billable | No V28 HCC |
| Z68.39 | Body mass index [BMI] 39.0-39.9, adult | Billable | No V28 HCC |
| Z68.4 | Body mass index [BMI] 40 or greater, adult | Header | Header code, not reportable |
| Z68.41 | Body mass index [BMI] 40.0-44.9, adult | Billable | HCC 48 |
| Z68.42 | Body mass index [BMI] 45.0-49.9, adult | Billable | HCC 48 |
| Z68.43 | Body mass index [BMI] 50.0-59.9, adult | Billable | HCC 48 |
| Z68.44 | Body mass index [BMI] 60.0-69.9, adult | Billable | HCC 48 |
| Z68.45 | Body mass index [BMI] 70 or greater, adult | Billable | HCC 48 |
| Z68.5 | Body mass index [BMI] pediatric | Header | Header code, not reportable |
| Z68.51 | Body mass index [BMI] pediatric, less than 5th percentile for age | Billable | No V28 HCC |
| Z68.52 | Body mass index [BMI] pediatric, 5th percentile to less than 85th percentile for age | Billable | No V28 HCC |
| Z68.53 | Body mass index [BMI] pediatric, 85th percentile to less than 95th percentile for age | Billable | No V28 HCC |
| Z68.54 | Body mass index [BMI] pediatric, 95th percentile for age to less than 120% of the 95th percentile for age | Billable | No V28 HCC |
| Z68.55 | Body mass index [BMI] pediatric, 120% of the 95th percentile for age to less than 140% of the 95th percentile for age | Billable | No V28 HCC |
| Z68.56 | Body mass index [BMI] pediatric, greater than or equal to 140% of the 95th percentile for age | Billable | HCC 48 |
FY2027 changes in Z68 (effective October 1, 2026)
From the CMS FY2027 order and addenda files. The table above is the FY2026 set that is served today.
Documentation guides for Z68
Frequently asked questions
How many Z68 codes are there?
The Z68 category (Body mass index [BMI]) has 37 codes in the FY2026 ICD-10-CM order file: 32 billable and 5 header codes, counting the category itself. Only a billable code can be reported on a claim.
Which Z68 codes map to an HCC under CMS-HCC V28?
6 billable codes in Z68 map to HCC 48 in the CMS-HCC V28 model for payment year 2026. HCC 48 (Morbid Obesity) carries the most, with 6 codes. The 26 billable codes without a V28 category are marked "No V28 HCC" in the table.
Which Z68 codes are not billable?
Z68 itself and 4 subcategory codes are header codes that need a further character before they can be reported: Z68.2 (Body mass index [BMI] 20-29, adult), Z68.3 (Body mass index [BMI] 30-39, adult), Z68.4 (Body mass index [BMI] 40 or greater, adult), Z68.5 (Body mass index [BMI] pediatric). Each one is listed in the table with the billable codes beneath it.
Source: FY2026 ICD-10-CM order file (FY 2026 Apr update) for codes, billability, and descriptors; CMS-HCC V28 PY2026 final ICD-10-CM mappings and relative factors for payment status. Table generated 2026-09-10.