ICD-10 Code O99.03: Anemia complicating the puerperium
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Pregnancy, childbirth and the puerperium (O00-O9A).
đź“‹Clinical overview
This ICD-10 code is commonly used when documentation describes anemia complicating pregnancy, childbirth, or the puerperium. The most accurate code depends on the maternal timing context and whether the chart later identifies a more specific anemia type or cause.
When is it used?
- May be used when a clinician documents anemia complicating the puerperium in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
đź©şClinical context
- Obstetric, prenatal, inpatient, and postpartum documentation where maternal anemia affects pregnancy monitoring, delivery planning, or recovery follow-up.
- Coding and utilization-review workflows where trimester or delivery timing is known and anemia materially affects maternal care.
- Common related testing on this page includes Complete blood count, Ferritin, Iron studies.
- Related procedures or service context already linked on this page include Obstetric ultrasound, Fetal nonstress testing.
- Maternal-anemia follow-up often includes hemoglobin or CBC review, iron-status evaluation context, medication or supplement review, and monitoring for delivery-related blood-loss risk.
- Documentation usually becomes more specific when the chart identifies iron deficiency, blood loss, chronic disease, or the exact pregnancy, childbirth, or puerperium timing.
- Specialist context already linked on this page includes Obstetrician, Gynecologist, Hematologist.
🔍Key distinctions
- This ICD-10 family is used when maternal anemia complicates pregnancy-related care, but separate codes may still be needed when the anemia type or underlying cause is clearly documented.
- Trimester and delivery timing matter, while more specific anemia-type documentation can add clinical context beyond this maternal-complication code alone.
- Puerperium or postpartum maternal-anemia documentation is coded separately from pregnancy or childbirth encounters because the maternal recovery context has changed.
- postpartum anemia not pre-existing prior to delivery (O90.81)
Code hierarchy
Official coding notes
- postpartum anemia not pre-existing prior to delivery (O90.81)
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
Related tests
Related procedures
Coding guidelines
Common synonyms
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.