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Home/Diagnosis/ICD-10 Coding for Connective Tissue Disease

ICD-10 Coding for Connective Tissue Disease

M32.1
M34.0
M35.1

Complete ICD-10-CM coding and documentation guide for icd-10 coding for connective tissue disease includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Systemic Connective Tissue Disorders
Mixed Connective Tissue Disease
Undifferentiated Connective Tissue Disease
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Key Information: ICD-10 Coding for Connective Tissue Disease

Essential facts and insights about ICD-10 Coding for Connective Tissue Disease

Use ICD-10 code M32.1 for systemic lupus erythematosus with organ or system involvement, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Systemic lupus erythematosus with organ or system involvement

Non-Billable
M32.1
Non-Billable

Diagnostic Criteria

  • • Positive anti-dsDNA and organ involvement

Applicable To

  • • Lupus nephritis
  • • Neuropsychiatric lupus

Important Notes

  • • Ensure organ involvement is documented with specific tests.

Progressive systemic sclerosis

Billable Code
M34.0
Billable

Diagnostic Criteria

  • • Skin thickening proximal to MCP joints
  • • Esophageal dysmotility on manometry

Applicable To

  • • Scleroderma with skin thickening

Important Notes

  • • Document specific organ involvement and antibody tests.

Mixed connective tissue disease

Billable Code
M35.1
Billable

Diagnostic Criteria

  • • Positive anti-U1 RNP antibodies
  • • Raynaud's phenomenon

Applicable To

  • • Features of SLE, scleroderma, and polymyositis

Important Notes

  • • Ensure documentation of specific antibodies and clinical features.
Ancillary Codes

Additional codes that may be used with this diagnosis

N08.5

Glomerular disorders in diseases classified elsewhere

Use to specify renal involvement in SLE.

I27.23

Pulmonary hypertension due to connective tissue disease

Use to specify pulmonary involvement in systemic sclerosis.

J84.89

Other specified interstitial pulmonary diseases

Use to specify lung involvement in MCTD.

Frequently Asked Questions

What is the ICD-10 code for connective tissue disease?

The ICD-10 code range for connective tissue diseases is M30-M36, covering various systemic disorders like SLE and MCTD.

How do you code mixed connective tissue disease?

Mixed connective tissue disease is coded as M35.1, requiring documentation of positive anti-U1 RNP antibodies and clinical features.

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