2021

  1. ICD-10-CM Codes
    2. ›
  2. O00-O9A Pregnancy, childbirth and the puerperium
    3. ›
  3. O94-O9A Other obstetric conditions, not elsewhere classified
    4. ›
  4. O99- Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code O99

2021 ICD-10-CM Diagnosis Code O99

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

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • O99 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Oth maternal diseases classd elsw but compl preg/chldbrth
  • The 2021 edition of ICD-10-CM O99 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of O99 - other international versions of ICD-10 O99 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 specific condition
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (O99) and the excluded code together.
  • when the reason for maternal care is that the condition is known or suspected to have affected the fetus (
    ICD-10-CM Diagnosis Code O35

    Maternal care for known or suspected fetal abnormality and damage

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Code Also
    • any associated maternal condition
    Includes
    • the listed conditions in the fetus as a reason for hospitalization or other obstetric care to the mother, or for termination of pregnancy
    Type 1 Excludes
    • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
    O35
    -
    ICD-10-CM Diagnosis Code O36

    Maternal care for other fetal problems

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Includes
    • the listed conditions in the fetus as a reason for hospitalization or other obstetric care of the mother, or for termination of pregnancy
    Type 1 Excludes
    • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
    • placental transfusion syndromes (O43.0-)
    Type 2 Excludes
    • labor and delivery complicated by fetal stress (O77.-)
    O36
    )
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • conditions which complicate the pregnant state, are aggravated by the pregnancy or are a main reason for obstetric care
The following code(s) above O99 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:
  • O00-O9A
    2021 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
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
ICD-10-CM Codes Adjacent To O99
O98.82 Other maternal infectious and parasitic diseases complicating childbirth
O98.83 Other maternal infectious and parasitic diseases complicating the puerperium
O98.9 Unspecified maternal infectious and parasitic disease complicating pregnancy, childbirth and the puerperium
O98.91 Unspecified maternal infectious and parasitic disease complicating pregnancy
O98.911 …… first trimester
O98.912 …… second trimester
O98.913 …… third trimester
O98.919 …… unspecified trimester
O98.92 Unspecified maternal infectious and parasitic disease complicating childbirth
O98.93 Unspecified maternal infectious and parasitic disease complicating the puerperium
O99 Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
O99.0 Anemia complicating pregnancy, childbirth and the puerperium
O99.01 Anemia complicating pregnancy
O99.011 …… first trimester
O99.012 …… second trimester
O99.013 …… third trimester
O99.019 …… unspecified trimester
O99.02 Anemia complicating childbirth
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

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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