ICD-10-CM Q85: Phakomatoses, not elsewhere classified

ICD-10-CM Diagnosis Code (2025)

Official Description for Q85

Phakomatoses, not elsewhere classified

Coding Notes & Guidelines for Q85

Excludes1: Not Coded Here
  • ataxia telangiectasia [Louis-Bar] (G11.3)
  • familial dysautonomia [Riley-Day] (G90.1)
Excludes1: Not Coded Here

Meckel-Gruber syndrome (Q61.9)

Inclusion Terms

Von Recklinghausen disease

Inclusion Terms

Acoustic neurofibromatosis

Inclusion Terms
  • Bourneville's disease
  • Epiloia
Inclusion Terms
  • PHTS
  • PTEN related Cowden syndrome
Inclusion Terms
  • Peutz-Jeghers syndrome
  • Sturge-Weber(-Dimitri) syndrome
Inclusion Terms

Hamartosis NOS

Code Also

, if applicable, genetic susceptibility to malignant neoplasm (Z15.0-)

Code Also

manifestations

Child Codes (More Specific Codes for Q85):

Q85.0 - Neurofibromatosis (nonmalignant) Q85.00 - Neurofibromatosis, unspecified Q85.01 - Neurofibromatosis, type 1 Q85.02 - Neurofibromatosis, type 2 Q85.03 - Schwannomatosis Q85.09 - Other neurofibromatosis Q85.1 - Tuberous sclerosis Q85.8 - Other phakomatoses, not elsewhere classified Q85.81 - PTEN hamartoma tumor syndrome Q85.82 - Other Cowden syndrome Q85.83 - Von Hippel-Lindau syndrome Q85.89 - Other phakomatoses, not elsewhere classified Q85.9 - Phakomatosis, unspecified

About ICD-10-CM Code Q85 (Phakomatoses)

ICD-10-CM code Q85 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM Q85 became effective on October 1, 2024.

This page provides detailed information about Q85 - Phakomatoses, not elsewhere classified. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Phakomatoses related to not elsewhere classified.