ICD-10-CM > Q00-QA0 > Q80-Q89 > Q85 > Q85.8 Q85.8 Other phakomatoses, not elsewhere classified Non-Billable/Non-Specific Type 1 Excludes Meckel-Gruber syndrome (Q61.9) Codes Q85.81PTEN hamartoma tumor syndromeQ85.82Other Cowden syndromeQ85.83Von Hippel-Lindau syndromeQ85.89Other phakomatoses, not elsewhere classified