ICD-10-CM FY2027 diagnosis code

M45.5: Ankylosing spondylitis of thoracolumbar region

Billable codeValid for dates of service October 1, 2026 to September 30, 2027

M45.5 is a billable ICD-10-CM diagnosis code for ankylosing spondylitis of thoracolumbar region. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.

M45.5 questions

Is M45.5 a billable code?

Yes. M45.5 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.

What does M45.5 mean?

M45.5 is the ICD-10-CM code for Ankylosing spondylitis of thoracolumbar region. It is in chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99).

Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.