ICD-10-CM Book 2026 Edition
Chapters ICD-10-CM Book Table of Content /
chapter 17 Q00-QA0 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders /
Q80-Q89 Other congenital malformations /
Q85 Phakomatoses, not elsewhere classified
Billable ICD-10-CM Code Q85.9
Q85.9
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Phakomatosis, unspecified 
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Hamartosis NOS
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