Practice Test Geeks(COBGC) Certified Obstetrics Gynecology Coder Practice Test
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ICD-10 Coding for OB/GYN Flashcards

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  1. According to ICD-10-CM guidelines, when a delivery occurs during an admission and there is a documented obstetric complication, the principal diagnosis should be:

    Answer: The obstetric complication that necessitated or resulted from the delivery

    ICD-10-CM guidelines require the obstetric complication to be sequenced as principal diagnosis when it is the reason for admission or significantly affects the delivery.

  2. A pregnant patient at 24 weeks is known to have HIV disease (not just HIV-positive status). How should this be coded in ICD-10-CM?

    Answer: O98.712 as the principal diagnosis with B20 as an additional code

    O98.712 (HIV disease complicating pregnancy, second trimester) is sequenced first per Chapter 15 priority rules, with B20 added as a required additional code.

  3. A patient is 10 weeks pregnant with her first pregnancy and presents for a routine prenatal visit with no complications. The principal ICD-10-CM code is:

    Answer: Z34.01 – Encounter for supervision of first trimester of first normal pregnancy

    Z34.01 applies to supervision of a normal first pregnancy in the first trimester (under 14 weeks); Z34.8x is reserved for second and subsequent normal pregnancies.

  4. ICD-10-CM category O09 (Supervision of high-risk pregnancy) is used when:

    Answer: The pregnancy carries elevated risk due to factors such as advanced maternal age, prior pregnancy loss, or history of infertility

    O09 codes are assigned for prenatal supervision of pregnancies at elevated risk due to specific maternal risk factors, distinguishing them from normal low-risk pregnancies coded with Z34.

  5. According to ICD-10-CM general coding guidelines, when a condition qualifies for both a Chapter 15 (obstetric) code and a code from another chapter, the sequencing rule is:

    Answer: Chapter 15 codes have sequencing priority and are used as the principal or first-listed diagnosis

    ICD-10-CM guidelines explicitly state that Chapter 15 codes have sequencing priority over codes from other chapters when the patient is pregnant and the condition relates to or complicates the pregnancy.

  6. According to ICD-10-CM guidelines, codes from Chapter 15 (Pregnancy, Childbirth, and the Puerperium) are used only on:

    Answer: The maternal medical record

    ICD-10-CM guidelines specify that Chapter 15 codes are assigned exclusively to the maternal record and are never used on the newborn's chart.

  7. A patient at 38 weeks with a prior low transverse cesarean scar is presenting for VBAC planning. The ICD-10-CM code for the uterine scar is:

    Answer: O34.211 – Maternal care for low transverse scar from previous cesarean delivery

    O34.211 specifies maternal care for a low transverse uterine scar from a prior cesarean, the most common incision type requiring documentation for VBAC candidacy.