2021 ICD-10-CM Diagnosis Code O35

2021 ICD-10-CM Diagnosis Code O35

Maternal care for known or suspected fetal abnormality and damage

Code Also
Code Also Help
A code also note instructs that 2 codes may be required to fully describe a condition but the sequencing of the two codes is discretionary, depending on the severity of the conditions and the reason for the encounter.
  • any associated maternal condition
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as O35. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • encounter for suspected maternal and fetal conditions ruled out (
    ICD-10-CM Diagnosis Code Z03.7

    Encounter for suspected maternal and fetal conditions ruled out

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Encounter for suspected maternal and fetal conditions not found
    Type 1 Excludes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • the listed conditions in the fetus as a reason for hospitalization or other obstetric care to the mother, or for termination of pregnancy
The following code(s) above O35 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 O35:
  • O00-O9A
    2021 ICD-10-CM Range O00-O9A

    Pregnancy, childbirth and the puerperium

    • 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
Code annotations containing back-references to O35:
ICD-10-CM Codes Adjacent To O35
O34.8 Maternal care for other abnormalities of pelvic organs
O34.80 …… unspecified trimester
O34.81 …… first trimester
O34.82 …… second trimester
O34.83 …… third trimester
O34.9 Maternal care for abnormality of pelvic organ, unspecified
O34.90 …… unspecified trimester
O34.91 …… first trimester
O34.92 …… second trimester
O34.93 …… third trimester
O35 Maternal care for known or suspected fetal abnormality and damage
O35.0 Maternal care for (suspected) central nervous system malformation in fetus
O35.0XX0 …… not applicable or unspecified
O35.0XX1 …… fetus 1
O35.0XX2 …… fetus 2
O35.0XX3 …… fetus 3
O35.0XX4 …… fetus 4
O35.0XX5 …… fetus 5
O35.0XX9 …… other fetus
O35.1 Maternal care for (suspected) chromosomal abnormality in fetus
O35.1XX0 …… not applicable or unspecified

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