ICDcodes.org
FY2027

N13.3 — Other and unspecified hydronephrosis

Not billable

Is N13.3 billable?

No — N13.3 is a non-billable header code. N13.3 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 2 billable codes beneath N13.3.

N13.3 at a glance

CodeN13.3
DescriptionOther and unspecified hydronephrosis
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Excludes1 — never code together

The conditions below can never be reported together with N13.3 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • hydronephrosis with infection (N13.6)

Excludes1 — never code together — inherited from N10-N16

The conditions below can never be reported together with N13.3 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • pyeloureteritis cystica (N28.85)

Excludes2 — not included here — inherited from Chapter 14

The conditions below are not part of N13.3, but a patient may have both at the same time. When documentation supports it, N13.3 and the excluded code may both be reported.

  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Excludes2 — not included here — inherited from N13

The conditions below are not part of N13.3, but a patient may have both at the same time. When documentation supports it, N13.3 and the excluded code may both be reported.

  • calculus of kidney and ureter without hydronephrosis (N20.-)
  • congenital obstructive defects of renal pelvis and ureter (Q62.0-Q62.3)
  • hydronephrosis with ureteropelvic junction obstruction (Q62.11)
  • obstructive pyelonephritis (N11.1)

What codes fall under N13.3? (2)

How long has N13.3 existed?

N13.3 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with N13.3?

ICD-10-CM declares these codes mutually exclusive with N13.3 — exactly one of each pair can be correct for a given encounter.

What other codes are in the N13 family? (9)