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ICD-10-CM 2027 diagnosis code

Z68.43Body mass index [BMI] 50.0-59.9, adult

✓ Billable / specificPOA exemptCC — complication/comorbidityAdult · age 15–124Not a principal dx

Z68.43 is a valid, billable ICD-10-CM code for body mass index [bmi] 50.0-59.9, adult. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code last changed in FY2021 (effective October 1, 2020). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Z68.43

Z68.43 is the ICD-10-CM diagnosis code for body mass index [BMI] 50.0-59.9, adult. It belongs to category Z68 (body mass index [BMI]), block Z68 (body mass index [BMI]) and chapter 21 (factors influencing health status and contact with health services). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Z68.4 (body mass index [BMI] 40 or greater, adult), Z68.43 is specifically for body mass index [BMI] 50.0-59.9, adult. Related codes cover 40.0-44.9, adult (Z68.41), 45.0-49.9, adult (Z68.42), 60.0-69.9, adult (Z68.44) and 70 or greater, adult (Z68.45).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 640 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC, relative weight 1.3395) and DRG 641 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCC, relative weight 0.7865), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

The Medicare Code Editor expects this diagnosis only for patients age 15 through 124.

It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2019 (title revised), FY2020 (title revised) and FY2021 (title revised).

Before ICD-10, this condition was coded in ICD-9-CM as V85.43 (body Mass Index 50.0-59.9, adult).

Notes that apply from higher levels

Instructions written at a parent level also apply to Z68.43.

› From Z68 Body mass index [BMI]
Note
  • 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)

Broader instructions also apply from Chapter 21: Factors influencing health status and contact with health services.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to Z68.43.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • V85.43Body Mass Index 50.0-59.9, adultexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • FY2019 (effective 10/1/2018): Title revised — was “Body mass index (BMI) 50-59.9 , adult”
  • FY2020 (effective 10/1/2019): Title revised — was “Body mass index (BMI) 50-59.9, adult”
  • FY2021 (effective 10/1/2020): Title revised — was “Body mass index (BMI) 50.0-59.9, adult”

Common questions about Z68.43

Is Z68.43 billable?

Yes. Z68.43 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Z68.43 be used as a principal diagnosis?

No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.

Is Z68.43 a CC or MCC?

Z68.43 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does Z68.43 group to?

Z68.43 is used in the MS-DRG v44.0 logic for MS-DRG 640 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC) and MS-DRG 641 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for Z68.43?

The CMS General Equivalence Mappings map Z68.43 to ICD-9-CM V85.43.