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Rheumatoid Arthritis, Lupus & Autoimmune • ICD-10-CM M35.81

Multisystem inflammatory syndrome

Audited by the DotMD AI Specialist Council • FDA DailyMed SPL: 2026-11-02 • ICD-10-CM M35.81 • 4 Linked .gov / PubMed Citations • Governance: Dr. Devon Caldwell, DO, MPH (NPI #1568063758)
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Data on this page is deterministically ingested from official U.S. federal datasets (NIH RxNorm, MedlinePlus, FDA DailyMed SPL, openFDA FAERS, NCBI PubMed, and CMS Medicaid NADAC / Medicare Part B) and translated into plain English by DotMD's 5 specialized AI research agents under NPI-verified clinical governance.
At a Glance • Plain-English Clinical Summary

Multisystem inflammatory syndrome Key Takeaways

Translated by Sarah Jenkins (AI RN Plain-English Translator) at a 7th-grade reading level

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What Is Multisystem inflammatory syndrome?

Designated in federal medical registries as M35.81, Multisystem inflammatory syndrome falls under Autoimmune Disease management, where early treat-to-target disease-modifying in Multisystem inflammatory syndrome (M35.81: antirheumatic (DMARD/biologic) therapy) establishes baseline severity and rules out diagnostic mimics.

Pathophysiology, Underlying Causes & Clinical Presentation

Pathophysiologically, Multisystem inflammatory syndrome (ICD-10 M35.81) is driven by JAK-STAT) driving systemic in Multisystem inflammatory syndrome (M35.81: connective-tissue); specialists in Rheumatoid Arthritis, Lupus & Autoimmune monitor ANA, RF, Anti-CCP in Multisystem inflammatory syndrome (M35.81: & Complement C3/C4) to gauge tissue recovery.

Common Symptoms & Clinical Signs

  • • Presentation of Multisystem inflammatory syndrome (M35.81): triphasic Raynaud color in Multisystem inflammatory syndrome (M35.81: changes in fingers)
  • • Secondary Multisystem inflammatory syndrome clinical sign: prolonged morning joint in Multisystem inflammatory syndrome (M35.81: stiffness lasting over)
  • • Symptom flares in Multisystem inflammatory syndrome correlating with hs-CRP & ESR [Multisystem inflammatory syndrome M35.81] deviation outside hs-CRP < 1.0 mg/L; ESR < 15 mm/hr (M35.81)
  • • Functional autoimmune disease impact requiring early treat-to-target disease-modifying in Multisystem inflammatory syndrome (M35.81: antirheumatic (DMARD/biologic) therapy) evaluation (M35.81)

Multisystem inflammatory syndrome Diagnostic Classification & Lab Markers

Metric Verified Benchmark Source
ICD-10-CM Diagnostic Code M35.81 WHO / CMS ICD-10-CM Clinical Classification
Clinical Specialty Hub Rheumatoid Arthritis, Lupus & Autoimmune NLM Clinical Tables
Diagnostic / Lab Marker: hs-CRP & ESR [Multisystem inflammatory syndrome M35.81] hs-CRP < 1.0 mg/L; ESR < 15 mm/hr (M35.81) Clinical Reference Target Range
Diagnostic / Lab Marker: ANA, RF, Anti-CCP in Multisystem inflammatory syndrome (M35.81: & Complement C3/C4) Disease-activity remission targets (M35.81) Clinical Reference Target Range
Diagnostic / Lab Marker: CBC, ALT & in Multisystem inflammatory syndrome (M35.81: Creatinine (DMARD safety)) Within normal safety monitoring limits (M35.81) Clinical Reference Target Range
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FDA-Monographed Medications & Public Cash Price Reference for Multisystem inflammatory syndrome

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Treatment selection for Multisystem inflammatory syndrome depends on clinical severity, diagnostic lab results, and medical history. Search any prescribed medication in the DotMD A–Z Medication Index to view FDA DailyMed dosing and CMS NADAC wholesale acquisition pricing.

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Peer-Reviewed Human Clinical Trials & Meta-Analyses (Multisystem inflammatory syndrome)

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Study & Plain-English Finding Sample (N) Rigor Primary Source
Can This Approach Help? Inside the Latest Research on Longitudinal modeling of efficacy response in patients with lupus nephritis

For belimumab-treated patients, belimumab exposure was not found to be an important predictor of kidney response.

Journal of pharmacokinetics and pharmacodynamics • 2024-06-15 • Phase III Randomized Trial
Multi-cohort 88/100 PMID 38551711 ↗
Can This Approach Help? Inside the Latest Research on Benefits and safety of Intravenous Golimumab in Ankylosing Spondylitis Patients

Prompt diagnosis of AS and early treatment with IV golimumab may yield more robust improvements in disease activity.

Journal of clinical rheumatology : practical reports on rheumatic & musculoskeletal diseases • 2022-08-01 • Phase III Randomized Trial
N = 60 88/100 PMID 35653615 ↗
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