N20Category · further specificity requiredArchived

Calculus of kidney and ureter

HierarchyN20-N23 · N20

Code-level instructions

Includes

Calculous pyelonephritis

Excludes 1
  • nephrocalcinosis (E83.59)
  • that with hydronephrosis (N13.2)

Inherited instructions

Chapters 14 · Diseases of the genitourinary system (N00-N99)

Excludes 2
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

More specific codes

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