Q85.9

Phakomatosis, unspecified

Billable / specificHCC V28 23POA exempt

Q85.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Hamartosis NOS

Includes (from Q85)

  • Note: Codes from this chapter are not for use on maternal records

Excludes1

Not coded here — never report together with this code.

  • ataxia telangiectasia [Louis-Bar] (G11.3) (from Q85)
  • familial dysautonomia [Riley-Day] (G90.1) (from Q85)

Excludes2

Not included here — may be reported together when both conditions exist.

  • inborn errors of metabolism (E70-E88) (from Q85)

Also known as

  • Hamartosis NOS
  • Hamartoma, hamartoblastoma
  • Hamartosis
  • Phakomatosis

Parent code

  • Q85Phakomatoses, not elsewhere classifiedHeader

Related codes

  • Q85.0Neurofibromatosis (nonmalignant)Header
  • Q85.1Tuberous sclerosisBillable
  • Q85.8Other phakomatoses, not elsewhere classifiedHeader

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