2026 ICD-10-CM Diagnosis Code M32.15Tubulo-interstitial nephropathy in systemic lupus erythematosus

ICD-10-CM Codes›M00–M99›M30-M36›SLE

ICD-10-CM M32.15
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M32.15 is a billable ICD-10-CM diagnosis code for tubulo-interstitial nephropathy in systemic lupus erythematosus. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 545 through 547. Coders also document this condition as renal tubulo-interstitial disorder due to systemic lupus erythematosus. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Systemic lupus erythematosus and connective tissue disorders.

Code Identity

ICD-10-CM Code
M32.15
Billable Status
Yes — Valid for Submission
Code Describes
Tubulo-interstitial nephropathy in systemic lupus erythematosus
Short Description
Tubulo-interstitial nephrop in sys lupus erythematosus
Parent Code
M32.1
Systemic lupus erythematosus with organ or system involvement

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM30-M36Systemic connective tissue disorders
CategorySLESystemic lupus erythematosus (M32)
This CodeM32.15Tubulo-interstitial nephropathy in systemic lupus erythematosus

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Renal tubulo-interstitial disorder due to systemic lupus erythematosus

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Disorder(of)
      • tubulo-interstitial (in)
        • systemic lupus erythematosus
    • Lupus
      • erythematosus (discoid) (local)
        • systemic
          • with organ or system involvement
            • renal (glomerular)
              • tubulo-interstitial

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MUS024
Systemic lupus erythematosus and connective tissue disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Kidney Diseases

You have two kidneys, each about the size of your fist. They are near the middle of your back, just below the rib cage. Inside each kidney there are about a million tiny structures called nephrons. They filter your blood. They remove wastes and extra water, which become urine. The urine flows through tubes called ureters.

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Convert M32.15 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
710.0 Syst lupus erythematosus
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.
ICD-9-CM
583.81 Nephritis NOS in oth dis
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2023No changes
FY 2024RevisedCode revised
FY 2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About M32.15Overview

Is M32.15 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report tubulo-interstitial nephropathy in systemic lupus erythematosus on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M32.15 group to?

When tubulo-interstitial nephropathy in systemic lupus erythematosus is the principal diagnosis on an inpatient stay, it groups to MS-DRG 545, 546, 547, with relative weights from 0.8362 to 2.4817 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M32.15?

Under the General Equivalence Mappings, tubulo-interstitial nephropathy in systemic lupus erythematosus converts to ICD-9-CM 710.0 (syst lupus erythematosus) and 583.81 (nephritis NOS in oth dis). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.