M85.5 is the ICD-10 code for Aneurysmal bone cyst. It is a four-character subcategory of M85 (Other disorders of bone density and structure), the most specific level in the WHO edition. It belongs to the block M80–M85 (Disorders of bone density and structure) in Chapter XIII, Diseases of the musculoskeletal system and connective tissue.
- Code type
- Subcategory (4 characters)
- Chapter
- XIII · M00–M99
- Classification
- WHO ICD-10, 2019 version
What M85.5 excludes
Conditions that look similar but belong under another code.
- aneurysmal cyst of jaw K09.2
M85.5 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
M85.5Aneurysmal bencysta
M85.5Aneurysmal bencyste
- M85.50Aneurysmal bencyste i flere lokalisasjoner
- M85.51Aneurysmal bencyste i skulderregionen
- M85.52Aneurysmal bencyste i overarm
- M85.53Aneurysmal bencyste i underarm
- M85.54Aneurysmal bencyste i hånd
- M85.55Aneurysmal bencyste i bekkenregion eller lår
- M85.56Aneurysmal bencyste i kne eller legg
- M85.57Aneurysmal bencyste i ankel eller fot
- and 2 more national subcodes
DM855Knoglecyste forårsaget af aneurisme
M85.5Luun aneurysmakysta
M85.5Aneurysmatische Knochenzyste
M85.5Kyste anévrismal des os
M85.5aneurysmatische botcyste
Listed through more specific codes:
- M85.50Aneurysmal bone cyst, unspecified site
- M85.58Aneurysmal bone cyst, other site
- M85.59Aneurysmal bone cyst, multiple sites
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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