- invasion and growth of microorganisms in the kidney; may be clinically inapparent or result in local cellular injury.
590 Infections of kidney convert 590 to ICD-10
590.0 Chronic pyelonephritis convert 590.0 to ICD-10

590.00 … without lesion of renal medullary necrosis convert 590.00 to ICD-10

590.01 … with lesion of renal medullary necrosis convert 590.01 to ICD-10
590.1 Acute pyelonephritis convert 590.1 to ICD-10

590.10 … without lesion of renal medullary necrosis convert 590.10 to ICD-10

590.11 … with lesion of renal medullary necrosis convert 590.11 to ICD-10
590.2 Renal and perinephric abscess convert 590.2 to ICD-10
590.3 Pyeloureteritis cystica convert 590.3 to ICD-10
590.8 Other pyelonephritis or pyonephrosis not specified as acute or chronic convert 590.8 to ICD-10

590.80 Pyelonephritis unspecified convert 590.80 to ICD-10

590.81 Pyelitis or pyelonephritis in diseases classified elsewhere convert 590.81 to ICD-10
590.9 Infection of kidney unspecified convert 590.9 to ICD-10