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ICD-10 Coding for Lupus Nephritis(M32.14, M32.15)

Complete ICD-10-CM coding and documentation guide for Lupus Nephritis. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

LNLupus Glomerulonephritis

Related ICD-10 Code Ranges

Complete code families applicable to Lupus Nephritis

M32.1-M32.9Primary Range

Systemic lupus erythematosus (SLE) with organ or system involvement

This range includes codes for SLE with specific organ involvement, including nephritis.

Chronic kidney disease (CKD) and kidney failure

Used to code the stage of CKD associated with lupus nephritis.

Abnormal findings on examination of urine, without diagnosis

Includes codes for proteinuria, which is a common manifestation of lupus nephritis.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
M32.14Systemic lupus erythematosus with nephritisUse when lupus nephritis is confirmed by clinical and laboratory findings.
  • Renal biopsy confirming lupus nephritis
  • Presence of proteinuria ≥3.5 g/24hr
  • Elevated anti-dsDNA antibodies
M32.15Systemic lupus erythematosus with other organ or system involvementUse when SLE affects organs other than kidneys, or in conjunction with nephritis.
  • Documentation of SLE with involvement of organs other than kidneys

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for lupus nephritis

Essential facts and insights about Lupus Nephritis

The ICD-10 code for lupus nephritis is M32.14, used when nephritis is confirmed by clinical and laboratory findings.

Primary ICD-10-CM Codes for lupus nephritis

Systemic lupus erythematosus with nephritis
Billable Code

Decision Criteria

clinical Criteria

  • Biopsy-confirmed lupus nephritis with supporting lab findings

documentation Criteria

  • Detailed documentation of renal biopsy and lab results

Applicable To

  • Lupus nephritis

Excludes

  • Discoid lupus erythematosus (L93.0)

Clinical Validation Requirements

  • Renal biopsy confirming lupus nephritis
  • Presence of proteinuria ≥3.5 g/24hr
  • Elevated anti-dsDNA antibodies

Code-Specific Risks

  • Incorrectly coding as M32.9 when nephritis is confirmed

Coding Notes

  • Ensure documentation supports the presence of nephritis with appropriate clinical and laboratory findings.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Chronic kidney disease, stage 3

N18.3
Use to specify the stage of CKD associated with lupus nephritis.

Proteinuria, persistent

R80.1
Use to document persistent proteinuria in lupus nephritis.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Systemic lupus erythematosus, unspecified

M32.9
Use M32.9 only when specific organ involvement like nephritis is not documented.

Systemic lupus erythematosus with nephritis

M32.14
Use M32.14 when nephritis is the primary or sole organ involvement.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Lupus Nephritis to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code M32.14.

Impact

Clinical: May lead to inappropriate treatment decisions., Regulatory: Non-compliance with documentation standards., Financial: Potential for claim denials.

Mitigation Strategy

Ensure specific documentation of nephritis when present., Use precise terminology in clinical notes.

Impact

Reimbursement: Incorrect coding may lead to denied claims or reduced reimbursement., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate data representation of patient conditions.

Mitigation Strategy

Use M32.14 when nephritis is confirmed by clinical and laboratory findings.

Impact

Incorrect coding of lupus nephritis can lead to audit findings.

Mitigation Strategy

Regular training on coding updates and documentation standards.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Lupus Nephritis, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Lupus Nephritis

Use these documentation templates to ensure complete and accurate documentation for Lupus Nephritis. These templates include all required elements for proper coding and billing.

Biopsy-confirmed lupus nephritis

Specialty: Nephrology

Required Elements

  • Renal biopsy results
  • Proteinuria levels
  • Anti-dsDNA antibody levels
  • Complement levels

Example Documentation

Patient diagnosed with SLE (M32.10) and active lupus nephritis (M32.14), confirmed by renal biopsy showing Class IV LN, proteinuria 3.5g/day, elevated anti-dsDNA, low C3/C4.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has lupus with kidney issues.
Good Documentation Example
Patient with SLE (M32.10) presents with active lupus nephritis (M32.14) confirmed by renal biopsy showing class IV LN, proteinuria 3.5g/day, elevated anti-dsDNA, low C3/C4.
Explanation
The good example provides specific clinical details and confirms the diagnosis with biopsy and lab results.

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