Billable / Specific Code
ICD-10-CM M45.A4 is the diagnosis code for Non-radiographic axial spondyloarthritis of thoracic region. This code falls under the section "Spondylopathies" within Chapter 13 — Diseases of the musculoskeletal system and connective tissue (M00-M99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where M45.A4 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, M45.A4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
M45.A4 is the ICD-10-CM diagnosis code for "Non-radiographic axial spondyloarthritis of thoracic region". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of M45.A4 is M45.A ("Non-radiographic axial spondyloarthritis"). M45.A4 provides a more specific classification within this category.
M45.A4 is located in Section M45-M49 — "Spondylopathies" within Chapter 13 of the ICD-10-CM Tabular List.
Use M45.A4 when the patients documented diagnosis matches "Non-radiographic axial spondyloarthritis of thoracic region" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Non-radiographic axial spondyloarthritis of thoracic region is M45.A4.
Yes, M45.A4 can be used as a primary diagnosis code since it is billable and specific.
M45.A4 is in Chapter 13 of the ICD-10-CM Tabular List.
Yes, M45.A4 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.