ICD-10-CM 2027
ICD-10 code for kidney cyst
From the official ICD-10-CM alphabetic index entry “Cyst (colloid) (mucous) (simple) (retention) › kidney”. Page updated September 29, 2026.
About coding kidney cyst
The ICD-10-CM code for kidney cyst is N28.1 (Cyst of kidney, acquired). The official index lists 11 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on N28.1.
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.
More specific kidney cyst codes (official index)
- acquired N28.1 — Cyst of kidney, acquired
- calyceal
- congenital Q61.00 — Congenital renal cyst, unspecified
- more than one (multiple) Q61.02 — Congenital multiple renal cysts
- specified as polycystic Q61.3 — Polycystic kidney, unspecified
- adult type (autosomal dominant) Q61.2 — Polycystic kidney, adult type
- infantile type (autosomal recessive) NEC Q61.19 — Other polycystic kidney, infantile type
- collecting duct dilation Q61.11 — Cystic dilatation of collecting ducts
- pyelogenic
- simple N28.1 — Cyst of kidney, acquired
- solitary (single) N28.1 — Cyst of kidney, acquired
- acquired N28.1 — Cyst of kidney, acquired
- congenital Q61.01 — Congenital single renal cyst
Don't confuse with (Excludes1 for N28.1)
- cystic kidney disease (congenital) (Q61.-)
Common questions about kidney cyst ICD-10 codes
What is the ICD-10 code for kidney cyst?
- N28.1 — Cyst of kidney, acquired. More specific codes apply when the documentation supports them: N28.1, Q61.00, Q61.02, Q61.3 and others below.
What is the ICD-10 code for acquired kidney cyst?
- N28.1 — Cyst of kidney, acquired.
What is the ICD-10 code for congenital kidney cyst?
- Q61.00 — Congenital renal cyst, unspecified.
What is the ICD-10 code for more than one kidney cyst?
- Q61.02 — Congenital multiple renal cysts.
What is the ICD-10 code for simple kidney cyst?
- N28.1 — Cyst of kidney, acquired.
What is the ICD-10 code for solitary kidney 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.