ICD-10-CM 2027
ICD-10 code for Paranephric cyst
From the official ICD-10-CM alphabetic index entry “Cyst (colloid) (mucous) (simple) (retention) › paranephric”. Page updated September 29, 2026.
About coding Paranephric cyst
The ICD-10-CM code for Paranephric cyst is N28.1 (Cyst of kidney, acquired).
Within N28 (other disorders of kidney and ureter, not elsewhere classified), N28.1 is specifically for cyst of kidney, acquired. Related codes cover ischemia and infarction of kidney (N28.0), other specified disorders of kidney and ureter (N28.8) and disorder of kidney and ureter, unspecified (N28.9).
Don't report N28.1 together with the conditions in its Excludes1 note: cystic kidney disease (congenital) (Q61.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for N28.1)
- cystic kidney disease (congenital) (Q61.-)
Common questions about Paranephric cyst ICD-10 codes
What is the ICD-10 code for Paranephric cyst?
- N28.1 — Cyst of kidney, acquired.
Is N28.1 billable?
- Yes. N28.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N28.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N28.1 as a principal diagnosis.
Is N28.1 a CC or MCC?
- No. N28.1 is neither a CC nor an MCC under MS-DRG v44.0.