icd10free.comPowered by Curo

ICD-10 Coding for Connective Tissue Disorder(M35.9, I27.0, J84.9)

Save

Learn about the ICD-10 coding for connective tissue disorders, including mixed connective tissue disease. Understand documentation requirements and coding pitfalls.

Also known as:
Autoimmune Connective Tissue DisorderMixed Connective Tissue Disease
Related ICD-10 Code Ranges

Complete code families applicable to Connective Tissue Disorder

M00-M99Primary Range

Diseases of the musculoskeletal system and connective tissue

→
Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescription
M35.9Systemic involvement of connective tissue, unspecified
M35.1Mixed connective tissue disease
Primary ICD-10-CM Codes
Systemic involvement of connective tissue, unspecified
M35.9Billable
Differential Codes

Alternative codes to consider when ruling out similar conditions

Mixed connective tissue diseaseM35.1
Systemic lupus erythematosus, unspecifiedM32.9

Documentation & Coding Risks

Avoid these common issues when documenting Connective Tissue Disorder.

Failing to document serologic evidence for MCTD.

Impact

Clinical: May lead to incorrect diagnosis and treatment., Regulatory: Non-compliance with documentation standards., Financial: Potential for denied claims and reduced reimbursement.

Mitigation

Ensure lab results are included in the patient record., Educate providers on documentation standards.

Using M35.9 when specific serologic evidence is present.

Impact

Reimbursement: May result in lower reimbursement if specific codes are not used., Compliance: Non-compliance with coding guidelines for specificity., Data Quality: Decreases accuracy of clinical data.

Mitigation

Query the provider to confirm specific antibodies and clinical features.

Specificity of Connective Tissue Disorder Coding

Impact

Risk of audits due to use of unspecified codes when specific criteria are present.

Mitigation

Implement regular training for providers on documentation requirements.

Frequently Asked Questions

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with M35.9.