590 Infections of kidney 
590.0 Chronic pyelonephritis 
590.00 Chronic pyelonephritis without lesion of renal medullary necrosis convert 590.00 to ICD-10-CM
590.01 Chronic pyelonephritis with lesion of renal medullary necrosis convert 590.01 to ICD-10-CM 590.1 Acute pyelonephritis 590.10 Acute pyelonephritis without lesion of renal medullary necrosis convert 590.10 to ICD-10-CM 590.11 Acute pyelonephritis with lesion of renal medullary necrosis convert 590.11 to ICD-10-CM 590.2 Renal and perinephric abscess convert 590.2 to ICD-10-CM 590.3 Pyeloureteritis cystica convert 590.3 to ICD-10-CM 590.8 Other pyelonephritis or pyonephrosis not specified as acute or chronic 590.80 Pyelonephritis unspecified convert 590.80 to ICD-10-CM 590.81 Pyelitis or pyelonephritis in diseases classified elsewhere convert 590.81 to ICD-10-CM 590.9 Infection of kidney unspecified convert 590.9 to ICD-10-CM