2023 ICD-10-CM Diagnosis Code Z68.42

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Body mass index [BMI] 45.0-49.9, adult

    2016 2017 2018 2019 2020 2021 - Revised Code 2022 2023 Billable/Specific Code Adult Dx (15-124 years) POA Exempt
  • Z68.42 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM Z68.42 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of Z68.42 - other international versions of ICD-10 Z68.42 may differ.
ICD-10-CM Coding Rules
  • Z68.42 is applicable to adult patients aged 15 - 124 years inclusive.
The following code(s) above Z68.42 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Z68.42:
  • Z00-Z99
    2023 ICD-10-CM Range Z00-Z99

    Factors influencing health status and contact with health services

    • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
    • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
    • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
    Factors influencing health status and contact with health services
  • Z68
    ICD-10-CM Diagnosis Code Z68

    Body mass index [BMI]

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Applicable To
    • Kilograms per meters squared
    • 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)
    Body mass index [BMI]
Approximate Synonyms
  • Adult bmi 45-49.9
  • Body mass index 45-49.9 adult
  • Obesity, body mass index (bmi) 45-49.9
  • Severe adult obesity with bmi between 45-49.9
Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
  • Z68.42 is considered exempt from POA reporting.
ICD-10-CM Z68.42 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 640 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes with mcc
  • 641 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes without mcc

Convert Z68.42 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): Revised code
    • New description: Body mass index [BMI] 45.0-49.9, adult
    • 2020 description: Body mass index (BMI) 45.0-49.9, adult
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to Z68.42:

ICD-10-CM Codes Adjacent To Z68.42
Z68.32 Body mass index [BMI] 32.0-32.9, adult
Z68.33 Body mass index [BMI] 33.0-33.9, adult
Z68.34 Body mass index [BMI] 34.0-34.9, adult
Z68.35 Body mass index [BMI] 35.0-35.9, adult
Z68.36 Body mass index [BMI] 36.0-36.9, adult
Z68.37 Body mass index [BMI] 37.0-37.9, adult
Z68.38 Body mass index [BMI] 38.0-38.9, adult
Z68.39 Body mass index [BMI] 39.0-39.9, adult
Z68.4 Body mass index [BMI] 40 or greater, adult
Z68.41 Body mass index [BMI] 40.0-44.9, adult
Z68.42 Body mass index [BMI] 45.0-49.9, adult
Z68.43 Body mass index [BMI] 50.0-59.9, adult
Z68.44 Body mass index [BMI] 60.0-69.9, adult
Z68.45 Body mass index [BMI] 70 or greater, adult
Z68.5 Body mass index [BMI] pediatric
Z68.51 …… less than 5th percentile for age
Z68.52 …… 5th percentile to less than 85th percentile for age
Z68.53 …… 85th percentile to less than 95th percentile for age
Z68.54 …… greater than or equal to 95th percentile for age
Z69 Encounter for mental health services for victim and perpetrator of abuse
Z69.0 Encounter for mental health services for child abuse problems

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.