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ICD-10 Coding for Ankylosing Spondylitis(M45.0, H20.1, M08.1)

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Learn about ICD-10 coding for ankylosing spondylitis, including code M45 specifics, documentation requirements, and clinical validation.

Also known as:
ASBechterew's DiseaseMarie-Strümpell Disease
Related ICD-10 Code Ranges

Complete code families applicable to Ankylosing Spondylitis

M00-M99Primary Range

Diseases of the musculoskeletal system and connective tissue

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescription
M45.0Ankylosing spondylitis of multiple sites in spine
M45.6Ankylosing spondylitis lumbar region
Primary ICD-10-CM Codes
Ankylosing spondylitis of multiple sites in spine
M45.0Billable
Differential Codes

Alternative codes to consider when ruling out similar conditions

Other specified inflammatory spondylopathiesM46.8

Use for non-radiographic axial spondyloarthritis without radiographic changes.

Sacrococcygeal disorders, not elsewhere classifiedM53.3

Use for sacrococcygeal disorders not related to ankylosing spondylitis.

Documentation & Coding Risks

Avoid these common issues when documenting Ankylosing Spondylitis.

Failing to document HLA-B27 status

Impact

Clinical: May lead to misdiagnosis or inappropriate treatment., Regulatory: Non-compliance with documentation standards., Financial: Potential for claim denials or reduced reimbursement.

Mitigation

Ensure lab results are included in the patient's record., Regularly review documentation for completeness.

Using unspecified codes like M45 without a 4th character

Impact

Reimbursement: May lead to claim denials or reduced reimbursement., Compliance: Non-compliance with ICD-10 coding guidelines., Data Quality: Decreases specificity and accuracy of clinical data.

Mitigation

Always specify the spinal region affected by using codes like M45.6 for lumbar involvement.

Specificity of Coding

Impact

Using unspecified codes can lead to audit flags.

Mitigation

Ensure all codes are as specific as possible, using the full ICD-10 code set.

Frequently Asked Questions

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with M45.0.