Q61.5 Medullary cystic kidney

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis. Exempt from present-on-admission (POA) reporting.

Applicable to

• Nephronophthisis
• Sponge kidney NOS

Applies from Q61 Cystic kidney disease

Excludes1 (never code together)

• acquired cyst of kidney (N28.1)
• Potter's syndrome (Q60.6)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 753.16 Medullary cystic kidney (approximate)
• 753.17 Medullary sponge kidney (approximate)

Code annotations containing back-references to Q61.5

Back-references to Q61

• Type 1 Excludes: N28.1 Cyst of kidney, acquired ("cystic kidney disease (congenital) (Q61.-)")

Diagnosis Index entries for Q61.5

• Cystic › kidney (congenital) › medullary
• Cystic › medullary, kidney
• Medullary cystic kidney
• Nephronophthisis
• Sponge › kidney (medullary)

Nearby codes

• Q61.11 Cystic dilatation of collecting ducts
• Q61.19 Other polycystic kidney, infantile type
• Q61.2 Polycystic kidney, adult type
• Q61.3 Polycystic kidney, unspecified
• Q61.4 Renal dysplasia
• Q61.5 Medullary cystic kidney (this code)
• Q61.8 Other cystic kidney diseases
• Q61.9 Cystic kidney disease, unspecified