Non-Billable / Non-Specific Code
ICD-10-CM N04.B is the diagnosis code for Nephrotic syndrome with immune complex membranoproliferative glomerulonephritis (IC-MPGN). This code falls under the section "Glomerular diseases" 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.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where N04.B sits in the ICD-10-CM classification helps ensure proper coding:
No, N04.B is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
N04.B is the ICD-10-CM diagnosis code for "Nephrotic syndrome with immune complex membranoproliferative glomerulonephritis (IC-MPGN)". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of N04.B is N04 ("Nephrotic syndrome"). N04.B provides a more specific classification within this category.
N04.B is located in Section N00-N08 — "Glomerular diseases" within Chapter 14 of the ICD-10-CM Tabular List.
N04.B has 2 sub-code(s) that provide more specific detail: N04.B1, N04.B2.
Use N04.B when the patients documented diagnosis matches "Nephrotic syndrome with immune complex membranoproliferative glomerulonephritis (IC-MPGN)" 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 Nephrotic syndrome with immune complex membranoproliferative glomerulonephritis (IC-MPGN) is N04.B.
No, N04.B is non-billable. Use a more specific sub-code for primary diagnosis billing.
N04.B is in Chapter 14 of the ICD-10-CM Tabular List.
Yes, N04.B is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.