N13.39 — Other hydronephrosis
Is N13.39 billable?
Yes — N13.39 is billable for FY2027. N13.39 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. N13.39 may be submitted for encounters from October 1, 2026 through September 30, 2027.
N13.39 at a glance
| Code | N13.39 |
|---|---|
| Description | Other hydronephrosis |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does N13.39 group to?
N13.39 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, N13.39 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is N13.39 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to N13.39. They show the wording a clinician may have documented, which often differs from the Tabular description.
- HydronephrosisNEC › specified type NEC (atrophic) (early) (functionless) (intermittent) (primary) (secondary)
Excludes1 — never code together — inherited from N10-N16
The conditions below can never be reported together with N13.39 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)
Excludes1 — never code together — inherited from N13.3
The conditions below can never be reported together with N13.39 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)
Excludes2 — not included here — inherited from Chapter 14
The conditions below are not part of N13.39, but a patient may have both at the same time. When documentation supports it, N13.39 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 N13.39, but a patient may have both at the same time. When documentation supports it, N13.39 and the excluded code may both be reported.
How long has N13.39 existed?
N13.39 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.