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O99.511

Billable

Diseases of the respiratory system complicating pregnancy, first trimester

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A lung or breathing condition that occurs during the first three months of pregnancy and affects the pregnancy.

Coding Tips

  • •Confirm the trimester is documented in the medical record; first trimester is weeks 1-13
  • •Include a secondary diagnosis code for the specific respiratory condition (e.g., J45 for asthma, J44 for COPD)

Code Hierarchy

└O99Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium└O99.5Diseases of the respiratory system complicating pregnancy, childbirth and the puerperium└O99.51Diseases of the respiratory system complicating pregnancy└O99.511Diseases of the respiratory system complicating pregnancy, first trimester
└O99.511Diseases of the respiratory system complicating pregnancy, first trimester

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