N28.1 Cyst of kidney, acquired

Billable ICD-10-CM code, FY2026.

Applicable to

• Cyst (multiple) (solitary) of kidney (acquired)

Excludes1 (never code together)

• cystic kidney disease (congenital) (Q61.-)

MS-DRG index

Defines the logic of DRG(s) 698-700 in MDC 11.

Approximate ICD-9-CM (GEMs)

• 593.2 Cyst of kidney, acquired

Code annotations containing back-references to N28.1

Back-references to N28.1

• Type 1 Excludes: Q61 Cystic kidney disease ("acquired cyst of kidney (N28.1)")

Diagnosis Index entries for N28.1

• Cyst (colloid) (mucous) (simple) (retention) › kidney
• Cyst (colloid) (mucous) (simple) (retention) › kidney › acquired
• Cyst (colloid) (mucous) (simple) (retention) › kidney › simple
• Cyst (colloid) (mucous) (simple) (retention) › kidney › solitary (single)
• Cyst (colloid) (mucous) (simple) (retention) › kidney › solitary (single) › acquired
• Cyst (colloid) (mucous) (simple) (retention) › paranephric
• Cyst (colloid) (mucous) (simple) (retention) › peripelvic (lymphatic)
• Cyst (colloid) (mucous) (simple) (retention) › solitary › kidney
• Solitary › cyst, kidney

Nearby codes

• N28 Other disorders of kidney and ureter, not elsewhere classified
• N28.0 Ischemia and infarction of kidney
• N28.1 Cyst of kidney, acquired (this code)
• N28.8 Other specified disorders of kidney and ureter
• N28.81 Hypertrophy of kidney
• N28.82 Megaloureter
• N28.83 Nephroptosis
• N28.84 Pyelitis cystica