2027 ICD-10-CM Diagnosis Code N28.82Megaloureter
ICD-10-CM Codes›N00–N99›N25-N29›N28
- Billable — Valid for Submission
- Chronic Condition
N28.82 is a billable ICD-10-CM diagnosis code for megaloureter. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 698 through 700. Coders also document this condition as acquired megaureter. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified diseases of kidney and ureters.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acquired megaureter
- Dilatation of ureter
- Idiopathic dilation of ureter
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to N28.82: its own notes plus those printed at N28.8, block N25-N29, and Chapter 14. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may 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)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
ureter (idiopathic) N28.82
Megaloureter N28.82
Megaureter N28.82
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Ureteral Disorders
Your kidneys make urine by filtering wastes and extra water from your blood. The urine travels from the kidneys to the bladder in two thin tubes called ureters.
Read the full article at MedlinePlus
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Convert N28.82 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N28.82Overview
What is the ICD-10 code for megaloureter?
The ICD-10-CM code for megaloureter is N28.82 (sometimes written as N2882). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is N28.82 (Other specified disorders of kidney and ureter) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report megaloureter on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does N28.82 group to?
When megaloureter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 699, 698, 700, with relative weights from 0.6740 to 1.6400 depending on complications. Higher weights mean higher Medicare reimbursement.
Can N28.82 be reported with N13.4?
Not as a rule. The Excludes1 note at N28.8, which applies to N28.82, lists "hydroureter (N13.4)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of N28.82?
Under the General Equivalence Mappings, megaloureter converts to ICD-9-CM 593.89 (renal & ureteral dis NEC). The mapping is approximate, so confirm the match fits the documentation.
