2026 ICD-10-CM Diagnosis Code M35.04Sjogren syndrome with tubulo-interstitial nephropathy
ICD-10-CM Codes›M00–M99›M30-M36›M35
- Billable — Valid for Submission
- Chronic Condition
M35.04 is a billable ICD-10-CM diagnosis code for sjogren syndrome with tubulo-interstitial nephropathy. 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 tubulointerstitial nephropathy due to Sjogren syndrome. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nephritis; nephrosis; renal sclerosis and Systemic lupus erythematosus and connective tissue disorders.
M35.04 no longer risk-adjusts for Medicare Advantage: it mapped to HCC 40 under the retired CMS-HCC V24 model through payment year 2025 but maps to no category in the live V28 model. It still risk-adjusts in the PACE (CMS-HCC V22) category 40, ESRD (V21) category 40, ESRD (V21) category 141, ESRD (V24) category 40, and RxHCC Part D (V08) category 84 for payment year 2026.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
M35.04 no longer risk-adjusts for Medicare Advantage: it maps to no payment category in the live CMS-HCC V28 model, although it still risk-adjusts in the other CMS models shown below.
Source: CMS Payment Year 2026 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Tubulointerstitial nephropathy due to Sjogren syndrome
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Renal tubular acidosis in sicca syndrome
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic) N05.9
Pyelonephritis See Also: Nephritis, tubulo-interstitial;
Sjögren's disease M35.04
Syndrome See Also: Disease;
renal tubular acidosis M35.04
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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 M35.04 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M35.04Overview
What is the ICD-10 code for sjogren syndrome with tubulo-interstitial nephropathy?
The ICD-10-CM code for sjogren syndrome with tubulo-interstitial nephropathy is M35.04 (sometimes written as M3504). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is M35.04 (Sjogren syndrome) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report sjogren syndrome with tubulo-interstitial nephropathy on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does M35.04 group to?
When sjogren syndrome with tubulo-interstitial nephropathy 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 M35.04?
Under the General Equivalence Mappings, sjogren syndrome with tubulo-interstitial nephropathy converts to ICD-9-CM 710.2 (sicca syndrome) and 583.81 (nephritis NOS in oth dis). The mapping is approximate, so confirm the match fits the documentation.
Does M35.04 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage. M35.04 mapped to HCC 40 in the retired CMS-HCC V24 model, which last determined payment in 2025, but it maps to no category in the live V28 model; see all codes that no longer risk-adjust. It still risk-adjusts in the PACE (CMS-HCC V22) category 40 (Rheumatoid Arthritis and Inflammatory Connective Tissue Disease), ESRD (V21) category 40 (Rheumatoid Arthritis and Inflammatory Connective Tissue Disease), ESRD (V21) category 141 (Nephritis), ESRD (V24) category 40 (Rheumatoid Arthritis and Inflammatory Connective Tissue Disease), and RxHCC Part D (V08) category 84 (Systemic Lupus Erythematosus and Other Systemic Connective Tissue Disorders).
