ICD-10-CM code "N21": Calculus of lower urinary tract (2024)

Excludes

1. Diseases of the genitourinary system (N00-N99)

   Type 2certain conditions originating in the perinatal period (P04-P96)

   Type 2certain infectious and parasitic diseases (A00-B99)

   Type 2complications of pregnancy, childbirth and the puerperium (O00-O9A)

   Type 2congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)

   Type 2endocrine, nutritional and metabolic diseases (E00-E88)

   Type 2injury, poisoning and certain other consequences of external causes (S00-T88)

   Type 2neoplasms (C00-D49)

   Type 2symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

2. Urolithiasis (N20-N23)
3. Calculus of lower urinary tract (N21)

Includes

1. Diseases of the genitourinary system (N00-N99)
2. Urolithiasis (N20-N23)
3. Calculus of lower urinary tract (N21)

   Includescalculus of lower urinary tract with cystitis and urethritis

Subcategories

• Calculus in bladder (N21.0)
• Calculus in urethra (N21.1)
• Other lower urinary tract calculus (N21.8)
• Calculus of lower urinary tract, unspecified (N21.9)