ICD-10-CM M06.1 is the diagnosis code for Adult-onset Still's disease. This code falls under the section "Inflammatory polyarthropathies" 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.
The following conditions should never be coded at the same time as M06.1. They are mutually exclusive:
Understanding where M06.1 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, M06.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
M06.1 is the ICD-10-CM diagnosis code for "Adult-onset Still's disease". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of M06.1 is M06 ("Other rheumatoid arthritis"). M06.1 provides a more specific classification within this category.
M06.1 is located in Section M05-M14 — "Inflammatory polyarthropathies" within Chapter 13 of the ICD-10-CM Tabular List.
Use M06.1 when the patients documented diagnosis matches "Adult-onset Still's disease" 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 Adult-onset Still's disease is M06.1.
Yes, M06.1 can be used as a primary diagnosis code since it is billable and specific.
M06.1 is in Chapter 13 of the ICD-10-CM Tabular List.
Type 1 Excludes for M06.1 include: Still's disease NOS (M08.2-).
Yes, M06.1 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.