Ankylosing spondylitis of cervical region

This code signifies a chronic inflammatory arthropathy primarily affecting the axial skeleton, specifically localized to the cervical spine. It involves progressive fusion of the vertebrae in the neck, leading to stiffness and reduced range of motion. The condition is characterized by inflammation of the sacroiliac joints and spine, often progressing upwards.

Apply this code when documentation clearly indicates a diagnosis of ankylosing spondylitis with specific involvement of the cervical region. Supporting documentation should include physician notes detailing symptoms like neck pain, stiffness, limited cervical mobility, and imaging findings consistent with cervical spondylitis. This code is appropriate for both initial diagnoses and exacerbations of established cervical ankylosing spondylitis.

• Ensure documentation explicitly states "cervical region" involvement; do not assume based on general ankylosing spondylitis.
• Consider sequencing this code as the primary diagnosis when the cervical involvement is the main reason for the encounter.
• Differentiate from other forms of spondylopathy or localized cervical spondylosis, which have distinct codes.