Non-Billable / Non-Specific Code
ICD-10-CM M48.1 is the diagnosis code for Ankylosing hyperostosis [Forestier]. This code falls under the section "Spondylopathies" within Chapter 13 — Diseases of the musculoskeletal system and connective tissue (M00-M99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where M48.1 sits in the ICD-10-CM classification helps ensure proper coding:
No, M48.1 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
M48.1 is the ICD-10-CM diagnosis code for "Ankylosing hyperostosis [Forestier]". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of M48.1 is M48 ("Other spondylopathies"). M48.1 provides a more specific classification within this category.
M48.1 is located in Section M45-M49 — "Spondylopathies" within Chapter 13 of the ICD-10-CM Tabular List.
M48.1 has 10 sub-code(s) that provide more specific detail: M48.10, M48.11, M48.12, M48.13, M48.14 and more.
Use M48.1 when the patients documented diagnosis matches "Ankylosing hyperostosis [Forestier]" 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 Ankylosing hyperostosis [Forestier] is M48.1.
No, M48.1 is non-billable. Use a more specific sub-code for primary diagnosis billing.
M48.1 is in Chapter 13 of the ICD-10-CM Tabular List.
Yes, M48.1 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.