O99.513: Diseases of the respiratory system complicating pregnancy, third trimester
O99.513 is the billable ICD-10-CM diagnosis code for Diseases of the respiratory system complicating pregnancy, third trimester. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code O99.513?
O99.513 is the ICD-10-CM diagnosis code for Diseases of the respiratory system complicating pregnancy, third trimester. It belongs to category O99 (Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium).
Is O99.513 a billable code?
Yes. O99.513 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does O99.513 belong to?
O99.513 is part of ICD-10-CM category O99 — Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium, which has 192 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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