ICDcodes.org
FY2027

N13.0 — Hydronephrosis with ureteropelvic junction obstruction

BillableCC

Is N13.0 billable?

Yes — N13.0 is billable for FY2027. N13.0 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. N13.0 may be submitted for encounters from October 1, 2026 through September 30, 2027.

N13.0 at a glance

CodeN13.0
DescriptionHydronephrosis with ureteropelvic junction obstruction
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does N13.0 group to?

N13.0 sits in MDC 11 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 693Urinary Stones with MCCmedical
  • 694Urinary Stones without MCCmedical

As a secondary diagnosis, N13.0 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is N13.0 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to N13.0. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • HydronephrosisNEC › congenital › due to acquired occlusion of ureteropelvic junction (atrophic) (early) (functionless) (intermittent) (primary) (secondary)
  • Obstruction, obstructed, obstructive › pelviureteral junction › with hydronephrosis
  • Stricture › pelviureteric junction › acquired, with hydronephrosis
  • Stricture › ureteropelvic junction › acquired, with hydronephrosis
  • HydronephrosisNEC › with › obstruction › ureteropelvic junction › acquired (atrophic) (early) (functionless) (intermittent) (primary) (secondary)

Excludes2 — not included here

The conditions below are not part of N13.0, but a patient may have both at the same time. When documentation supports it, N13.0 and the excluded code may both be reported.

  • Hydronephrosis with ureteropelvic junction obstruction due to calculus (N13.2)

Inclusion terms

Alternative wording in documentation that is classified to N13.0.

  • Hydronephrosis due to acquired occlusion of ureteropelvic junction

Excludes1 — never code together — inherited from N10-N16

The conditions below can never be reported together with N13.0 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 N13.0, but a patient may have both at the same time. When documentation supports it, N13.0 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 N13.0, but a patient may have both at the same time. When documentation supports it, N13.0 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)

How long has N13.0 existed?

N13.0 first appears in FY2018 (FY2017 is not available, so it may have appeared then).

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

Which conditions are coded to N13.0?

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