Non-Billable / Non-Specific Code
ICD-10-CM N20 is the diagnosis code for Calculus of kidney and ureter. This code falls under the section "Urolithiasis" within Chapter 14 — Diseases of the genitourinary system (N00-N99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as N20. They are mutually exclusive:
Understanding where N20 sits in the ICD-10-CM classification helps ensure proper coding:
No, N20 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
N20 is the ICD-10-CM diagnosis code for "Calculus of kidney and ureter". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
N20 is located in Section N20-N23 — "Urolithiasis" within Chapter 14 of the ICD-10-CM Tabular List.
N20 has 4 sub-code(s) that provide more specific detail: N20.0, N20.1, N20.2, N20.9.
Use N20 when the patients documented diagnosis matches "Calculus of kidney and ureter" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Calculus of kidney and ureter is N20.
No, N20 is non-billable. Use a more specific sub-code for primary diagnosis billing.
N20 is in Chapter 14 of the ICD-10-CM Tabular List.
Type 1 Excludes for N20 include: nephrocalcinosis (E83.59); that with hydronephrosis (N13.2).
Yes, N20 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.