N00-N08
Medium Complexity
Glomerular diseases
Primary Specialty: Nephrology
Last Updated: 2025-09-10
ICD-10 Codes (86)
83 billable0 category headers
N01N01.0Billable
N01.1Billable
N01.2Billable
N01.3Billable
N01.4Billable
N01.5Billable
N01.6Billable
N01.7Billable
N01.8Billable
N01.9Billable
N02N02.0Billable
N02.1Billable
N02.2Billable
N02.3Billable
N02.4Billable
N02.5Billable
N02.6Billable
N02.7Billable
N02.8Billable
N02.9Billable
N03N03.0Billable
N03.1Billable
N03.2Billable
N03.3Billable
N03.4Billable
N03.5Billable
N03.6Billable
N03.7Billable
N03.8Billable
N03.9Billable
N04Billable
N04.0Billable
N04.1Billable
N04.2Billable
N04.20Billable
N04.21Billable
N04.22Billable
N04.29Billable
N04.3Billable
N04.4Billable
N04.5Billable
N04.6Billable
N04.7Billable
N04.8Billable
N04.9Billable
N05Billable
N05.0Billable
N05.1Billable
N05.2Billable
N05.3Billable
N05.4Billable
N05.5Billable
N05.6Billable
N05.7Billable
N05.8Billable
N05.9Billable
N06Billable
N06.0Billable
N06.1Billable
N06.2Billable
N06.20Billable
N06.21Billable
N06.22Billable
N06.29Billable
N06.3Billable
N06.4Billable
N06.5Billable
N06.6Billable
N06.7Billable
N06.8Billable
N06.9Billable
N07Billable
N07.0Billable
N07.1Billable
N07.2Billable
N07.3Billable
N07.4Billable
N07.5Billable
N07.6Billable
N07.7Billable
N07.8Billable
N07.9Billable
N08Billable
Updates & Changes
FY 2026 Updates
Current Year
New Codes (2)
N18.30
Chronic kidney disease, stage 3a (GFR 45-59)
N18.31
Chronic kidney disease, stage 3b (GFR 30-44)
Revised Codes (1)
N18.6
End stage renal disease - updated to align with KDIGO guidelines
Deleted Codes(1)
N18.3
Chronic kidney disease, stage 3 (moderate) - replaced by more specific 3a/3b staging
Historical Changes
- •FY 2025: Routine maintenance updates with minor terminology clarifications
- •FY 2024: Enhanced specificity requirements for certain code ranges
- •FY 2023: Updated documentation guidelines for improved clarity
Upcoming Changes
- •Proposed updates pending review by Coordination and Maintenance Committee
- •Under consideration: Enhanced digital health integration codes
Implementation Guidance
- •Review all FY 2026 updates for N00-N08 codes before implementation
- •Always verify the most current codes in the ICD-10-CM manual
- •Ensure clinical documentation supports the selected diagnosis codes
- +3 more guidance items...
Range Overview
high priority
The ICD-10 code range N00-N08 represents Glomerular diseases, which are conditions that affect the tiny filtering systems (glomeruli) of the kidneys. This range includes codes for nephritic and nephrotic syndromes, acute glomerulonephritis, chronic glomerulonephritis, and other specified and unspecified glomerular diseases.
Key Usage Points:
- •N00-N03 codes are used for acute nephritic syndrome and its subtypes.
- •N04 codes are used for nephrotic syndrome.
- •N05-N07 codes represent chronic glomerulonephritis, nephritis and nephropathy not specified as acute or chronic, and hereditary nephropathy, not elsewhere classified.
- •N08 is used for glomerular disorders in diseases classified elsewhere.
Coding Guidelines
When to Use:
- ✓When a patient is diagnosed with acute nephritic syndrome.
- ✓When a patient is diagnosed with nephrotic syndrome.
- ✓When a patient has chronic glomerulonephritis.
- ✓When a patient has hereditary nephropathy.
When NOT to Use:
- ✗When the patient's condition is not a glomerular disease.
- ✗When the patient's condition is a kidney disease not classified as a glomerular disease.
- ✗When the patient's condition is a urinary tract infection.
- ✗When the patient's condition is a renal failure.
Code Exclusions
Always verify exclusions with the latest ICD-10-CM official guidelines.
Documentation Requirements
Documentation for glomerular diseases should include the specific type of disease, its acute or chronic nature, and any underlying conditions. The documentation should also specify if the disease is hereditary.
Clinical Information:
- •Specific type of glomerular disease
- •Whether the disease is acute or chronic
- •Any underlying conditions
- •If the disease is hereditary
Supporting Evidence:
- •Lab results confirming the diagnosis
- •Imaging studies if applicable
- •Patient's symptoms and clinical history
Good Documentation Example:
Patient diagnosed with acute nephritic syndrome, confirmed by lab results showing proteinuria and hematuria.
Poor Documentation Example:
Patient diagnosed with kidney disease.
Common Documentation Errors:
- âš Not specifying the type of glomerular disease
- âš Not indicating whether the disease is acute or chronic
- âš Not documenting underlying conditions
Range Statistics
9
Total Codes
83
Billable
Complexity:
Medium
Primary Use:Clinical Documentation
Chapter:14
Coding Complexity
Medium
Complexity Rating
Coding for glomerular diseases can be complex due to the need to accurately identify the specific type of disease, its acute or chronic nature, any underlying conditions, and whether the disease is hereditary.
Key Factors:
- â–¸Determining the specific type of glomerular disease
- â–¸Distinguishing between acute and chronic conditions
- â–¸Identifying any underlying conditions
- â–¸Determining if the disease is hereditary
Specialty Focus
Glomerular diseases are primarily diagnosed and treated by nephrologists. However, these codes may also be used by internists and pediatricians.
Primary Specialties:
Nephrology
60%
Internal Medicine
30%
Pediatrics
10%
Clinical Scenarios:
- • A patient with sudden onset of edema, proteinuria, and hematuria diagnosed with acute nephritic syndrome.
- • A patient with long-term proteinuria and hypoalbuminemia diagnosed with nephrotic syndrome.
- • A patient with a family history of kidney disease diagnosed with hereditary nephropathy.
Resources & References
Resources for coding glomerular diseases include the ICD-10-CM official guidelines, clinical reference materials, and educational resources on nephrology coding.
Official Guidelines:
- ICD-10-CM Official Guidelines for Coding and Reporting
- American Health Information Management Association (AHIMA) guidelines
- American Association of Professional Coders (AAPC) guidelines
Clinical References:
- National Kidney Foundation guidelines
- American Society of Nephrology resources
Educational Materials:
- AAPC ICD-10 training
- AHIMA ICD-10 training
Frequently Asked Questions
How do I code for a patient with a glomerular disease due to diabetes?
Use code N08 with a secondary code for the specific type of diabetes.