ICD Code O09.521

ICD code O09.521 is supervision of a pregnant woman who is considered elderly and has been pregnant more than once, during her first trimester.

1. Patient is currently pregnant.

2. Patient is classified as elderly gravida (typically age 35 or older at expected date of delivery).

3. Patient has had two or more previous pregnancies (multigravida).

4. Patient is in the first trimester of the current pregnancy (less than 14 weeks gestation).

5. Encounter is for routine supervision or management of the pregnancy, not for complications.

Relevant CPT codes for ICD code O09.521 include:

- 59400 (Routine obstetric care including antepartum care, vaginal delivery, and postpartum care)

- 59425 (Antepartum care only; 4-6 visits)

- 59426 (Antepartum care only; 7 or more visits)

- 99202-99215 (Office or other outpatient evaluation and management services, depending on complexity and time)

- 76801 (Ultrasound, pregnant uterus, real time with image documentation, fetal and maternal evaluation, first trimester)

- 81000-81003 (Urinalysis, as may be performed during prenatal visits)

- 36415 (Collection of venous blood by venipuncture, if lab work is performed)

These CPT codes may be used in conjunction with ICD code O09.521 as medically appropriate.

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