Pregnancy related renal disease, second trimester

This code signifies the presence of kidney disease that is either caused or exacerbated by pregnancy, specifically identified during the second trimester. It encompasses various renal conditions, such as pyelonephritis, glomerulonephritis, or pre-existing chronic kidney disease, that are complicated by the gravid state.

Apply this code when documentation clearly indicates a renal condition occurring in a pregnant patient during her second trimester, and the condition is directly related to or significantly impacted by the pregnancy. Supporting documentation should include physician notes detailing the renal diagnosis and the gestational age at the time of diagnosis or exacerbation.

• Ensure the documentation specifies "second trimester" to accurately assign this code; otherwise, a different trimester-specific code or an unspecified trimester code may be more appropriate.
• Do not use this code for routine proteinuria or asymptomatic bacteriuria unless a definitive renal disease diagnosis is established.
• Always code the specific renal condition (e.g., N10 for acute pyelonephritis) as a secondary diagnosis to provide greater specificity.