Convert ICD-10 Code N21.9 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
N21.9 Calculus of lower urinary tract, unspecified		594.9 Lower urin calcul NOS

ICD-10 to ICD-9 crosswalk for code N21.9 - calculus of lower urinary tract, unspecified based on the most recent General Equivalence Mappings (GEMS) information.