ICD-10-CM M85.6 is the diagnosis code for Other cyst of bone. This code falls under the section "Disorders of bone density and structure" 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.
The following conditions should never be coded at the same time as M85.6. They are mutually exclusive:
Understanding where M85.6 sits in the ICD-10-CM classification helps ensure proper coding:
No, M85.6 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
M85.6 is the ICD-10-CM diagnosis code for "Other cyst of bone". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of M85.6 is M85 ("Other disorders of bone density and structure"). M85.6 provides a more specific classification within this category.
M85.6 is located in Section M80-M85 — "Disorders of bone density and structure" within Chapter 13 of the ICD-10-CM Tabular List.
M85.6 has 10 sub-code(s) that provide more specific detail: M85.60, M85.61, M85.62, M85.63, M85.64 and more.
Use M85.6 when the patients documented diagnosis matches "Other cyst of bone" 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 Other cyst of bone is M85.6.
No, M85.6 is non-billable. Use a more specific sub-code for primary diagnosis billing.
M85.6 is in Chapter 13 of the ICD-10-CM Tabular List.
Type 1 Excludes for M85.6 include: cyst of jaw NEC (M27.4); osteitis fibrosa cystica generalisata [von Recklinghausen's disease of bone] (E21.0).
Yes, M85.6 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.