N28.85
✓ BillablePyeloureteritis cystica
Diseases of the genitourinary system (N00-N99)
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • hydroureter (N13.4)
- • ureteric stricture with hydronephrosis (N13.1)
- • ureteric stricture without hydronephrosis (N13.5)
Clinical Description
ICD-10-CM code N28.85 represents pyeloureteritis cystica. This code falls under the Diseases of the genitourinary system (N00-N99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 6-character code at the 5th level of specificity. This is the most specific code available in this subcategory. Coders should note that N28.85 has 3 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code N28.85?
ICD-10-CM code N28.85 is "Pyeloureteritis cystica". It belongs to the category: Diseases of the genitourinary system (N00-N99).
Is N28.85 a billable ICD-10 code?
Yes, N28.85 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
What codes are excluded with N28.85?
N28.85 has 3 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Related Codes in N28.8
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)