O99.51

O99.51: Diseases of the respiratory system complicating pregnancy

Non-billable headerICD-10-CM

O99.51 is a non-billable header ICD-10-CM code for diseases of the respiratory system complicating pregnancy. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2 inherited from the categories above O99.51

Not part of this code, but both may be coded when both are present.

Written on O99: Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead O99.51

4 child codes. Green means billable.

O99.511Diseases of the respiratory system complicating pregnancy, first trimester
O99.512Diseases of the respiratory system complicating pregnancy, second trimester
O99.513Diseases of the respiratory system complicating pregnancy, third trimester
O99.519Diseases of the respiratory system complicating pregnancy, unspecified trimester

Other codes under O99.5

O99.52Diseases of the respiratory system complicating childbirth
O99.53Diseases of the respiratory system complicating the puerperium