2023

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  5. 2023 ICD-10-CM Diagnosis Code O99.21

2023 ICD-10-CM Diagnosis Code O99.21

Obesity complicating pregnancy, childbirth, and the puerperium

    2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
  • O99.21 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Obesity comp pregnancy, childbirth, and the puerperium
  • The 2023 edition of ICD-10-CM O99.21 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of O99.21 - other international versions of ICD-10 O99.21 may differ.
Use Additional
Use Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • code to identify the type of obesity (
    ICD-10-CM Diagnosis Code E66
    • E66 Overweight and obesity
      • E66.0 Obesity due to excess calories
        • E66.01 Morbid (severe) obesity due to excess calorie...
        • E66.09 Other obesity due to excess calories
      • E66.1 Drug-induced obesity
      • E66.2 Morbid (severe) obesity with alveolar hypoven...
      • E66.3 Overweight
      • E66.8 Other obesity
      • E66.9 Obesity, unspecified
    E66.-
    )
The following code(s) above O99.21 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 O99.21:
  • O00-O9A
    2023 ICD-10-CM Range O00-O9A

    Pregnancy, childbirth and the puerperium

    Note
    • CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
    • Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
    • Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
    • 1st trimester- less than 14 weeks 0 days
    • 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
    • 3rd trimester- 28 weeks 0 days until delivery
    Type 1 Excludes
    • supervision of normal pregnancy (Z34.-)
    Type 2 Excludes
    • mental and behavioral disorders associated with the puerperium (F53.-)
    • obstetrical tetanus (A34)
    • postpartum necrosis of pituitary gland (E23.0)
    • puerperal osteomalacia (M83.0)
    Use Additional
    • code from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
    Pregnancy, childbirth and the puerperium
  • O99
    ICD-10-CM Diagnosis Code O99

    Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Includes
    • conditions which complicate the pregnant state, are aggravated by the pregnancy or are a main reason for obstetric care
    Type 2 Excludes
    • when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)
    Use Additional
    • code to identify specific condition
    Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
  • O99.2
    ICD-10-CM Diagnosis Code O99.2

    Endocrine, nutritional and metabolic diseases complicating pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Applicable To
    Type 2 Excludes
    • diabetes mellitus (O24.-)
    • malnutrition (O25.-)
    • postpartum thyroiditis (O90.5)
    Endocrine, nutritional and metabolic diseases complicating pregnancy, childbirth and the puerperium
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): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
Code annotations containing back-references to O99.21:
  • Code First: E66
    ICD-10-CM Diagnosis Code E66

    Overweight and obesity

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Code First
    • obesity complicating pregnancy, childbirth and the puerperium, if applicable (O99.21-)
    Type 1 Excludes
    • adiposogenital dystrophy (E23.6)
    • lipomatosis NOS (E88.2)
    • lipomatosis dolorosa [Dercum] (E88.2)
    • Prader-Willi syndrome (Q87.11)
    Use Additional
    • code to identify body mass index (BMI), if known (Z68.-)

Diagnosis Index entries containing back-references to O99.21:
  • Obesity E66.9
    ICD-10-CM Diagnosis Code E66.9

    Obesity, unspecified

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Questionable As Admission Dx
    Applicable To
    • Obesity NOS
  • Pregnancy (single) (uterine) Z33.1
    - see also Delivery and Puerperal
    ICD-10-CM Diagnosis Code Z33.1

    Pregnant state, incidental

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
    Applicable To
    • Pregnancy NOS
    • Pregnant state NOS
    Type 1 Excludes
    • complications of pregnancy (O00-O9A)
    • pregnant state, gestational carrier (Z33.3)
    • complicated by (care of) (management affected by)
      • obesity O99.21- (pre-existing)

ICD-10-CM Codes Adjacent To O99.21
O99.03 Anemia complicating the puerperium
O99.1 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, childbirth and the puerperium
O99.11 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy
O99.111 …… first trimester
O99.112 …… second trimester
O99.113 …… third trimester
O99.119 …… unspecified trimester
O99.12 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating childbirth
O99.13 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating the puerperium
O99.2 Endocrine, nutritional and metabolic diseases complicating pregnancy, childbirth and the puerperium
O99.21 Obesity complicating pregnancy, childbirth, and the puerperium
O99.210 Obesity complicating pregnancy, unspecified trimester
O99.211 Obesity complicating pregnancy, first trimester
O99.212 Obesity complicating pregnancy, second trimester
O99.213 Obesity complicating pregnancy, third trimester
O99.214 Obesity complicating childbirth
O99.215 Obesity complicating the puerperium
O99.28 Other endocrine, nutritional and metabolic diseases complicating pregnancy, childbirth and the puerperium
O99.280 Endocrine, nutritional and metabolic diseases complicating pregnancy, unspecified trimester
O99.281 Endocrine, nutritional and metabolic diseases complicating pregnancy, first trimester
O99.282 Endocrine, nutritional and metabolic diseases complicating pregnancy, second trimester

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

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