What is the ICD-10 code for sacroiliac joint syndrome?

The ICD-10 code for sacroiliac joint syndrome is M46.1 when imaging confirms inflammation, or M53.3 for mechanical dysfunction without inflammation.

When should M46.1 be used?

Use M46.1 when imaging, such as MRI or CT, confirms inflammation of the sacroiliac joint.

ICD-10 Coding for Sacroiliac Joint Syndrome(M46.1, M45.9, M53.3)

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Explore detailed ICD-10 coding guidelines for sacroiliac joint syndrome, including M46.1 and M53.3, with documentation requirements and clinical validation criteria.

Also known as:

SI Joint DysfunctionSacroiliitissi joint syndrome

Related ICD-10 Code Ranges

Complete code families applicable to Sacroiliac Joint Syndrome

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

Code	Description	When to Use	Key Documentation
M46.1	Sacroiliitis, not elsewhere classified	Use when imaging confirms inflammation of the sacroiliac joint.	Imaging evidence of sacroiliitis such as MRI or CT showing subchondral sclerosis or erosions
M53.3	Sacrococcygeal disorders, not elsewhere classified	Use when there is mechanical dysfunction without imaging evidence of inflammation.	Physical exam findings such as positive provocative tests (e.g. FABER Gaenslen’s)

Primary ICD-10-CM Codes

Sacroiliitis, not elsewhere classified

M46.1Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Sacrococcygeal disorders, not elsewhere classifiedM53.3

Use when there is mechanical dysfunction without imaging evidence of inflammation.

Sacroiliitis, not elsewhere classifiedM46.1

Use when imaging confirms inflammation.

Documentation & Coding Risks

Avoid these common issues when documenting Sacroiliac Joint Syndrome.

Lack of imaging documentation for M46.1

Impact

Clinical: Misdiagnosis risk, Regulatory: Non-compliance with coding standards, Financial: Claim denials and revenue loss

Mitigation

Verify imaging before coding, Educate staff on documentation requirements

Using M46.1 without imaging confirmation

Impact

Reimbursement: Claims may be denied if imaging is not documented., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation

Ensure imaging reports confirm inflammation before using M46.1.

Imaging Documentation

Impact

Claims for M46.1 without linked imaging reports.

Mitigation

Ensure all imaging is documented and linked to the patient encounter.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with M46.1.

Primary Code

M46.1

Sacroiliitis, not elsewhere classified

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ICD-10 codes5

Coding risks3

FAQs2

ICD-10 Coding for Sacroiliac Joint Syndrome(M46.1, M45.9, M53.3)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for sacroiliac joint syndrome?

When should M46.1 be used?

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