2019 ICD-10-CM Diagnosis Code Q84.1

Congenital morphological disturbances of hair, not elsewhere classified

    2016 2017 2018 2019 Billable/Specific Code POA Exempt
  • Q84.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Congenital morphological disturbances of hair, NEC
  • The 2019 edition of ICD-10-CM Q84.1 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of Q84.1 - other international versions of ICD-10 Q84.1 may differ.
Applicable To
  • Beaded hair
  • Monilethrix
  • Pili annulati
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as Q84.1. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • Menkes' kinky hair syndrome (
    ICD-10-CM Diagnosis Code E83.0

    Disorders of copper metabolism

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    E83.0
    )
The following code(s) above Q84.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Q84.1:
  • Q00-Q99
    2019 ICD-10-CM Range Q00-Q99

    Congenital malformations, deformations and chromosomal abnormalities

    Note
    • Codes from this chapter are not for use on maternal records
    Type 2 Excludes
    • inborn errors of metabolism (E70-E88)
    Congenital malformations, deformations and chromosomal abnormalities
Approximate Synonyms
  • Beaded hair
  • Beaded hair, congenital
Clinical Information
  • A rare autosomal dominant inherited hair shaft disorder caused by mutations in the type ii keratin gene. It is characterized by the presence of thin, fragile hairs that appear beaded.
  • Rare autosomal dominant disorder of the hair shaft. The clinical features of the disease include hypotrichosis, dry, and/or brittle hair, with varying degrees of alopecia. Mutations in the hair-specific keratin genes krthb1, krthb3, or krthb6 are associated with monilethrix. Autosomal recessive monilethrix with limited hypotrichosis are also known. Mutations in dsg4, liph, and p2ry5 protein genes are associated with the recessive form of monilethrix.
Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
  • Q84.1 is considered exempt from POA reporting.
ICD-10-CM Q84.1 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 606 Minor skin disorders with mcc
  • 607 Minor skin disorders without mcc

Convert Q84.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
Code annotations containing back-references to Q84.1:
  • Type 1 Excludes: L67
    , L67
    ICD-10-CM Diagnosis Code L67

    Hair color and hair shaft abnormalities

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    ICD-10-CM Diagnosis Code L67

    Hair color and hair shaft abnormalities

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes

Diagnosis Index entries containing back-references to Q84.1:
  • Beaded hair Q84.1 (congenital)
  • Monilethrix Q84.1 (congenital)
  • Pili
    • annulati or torti Q84.1 (congenital)
  • Ringed hair Q84.1 (congenital)
  • Thrix annulata Q84.1 (congenital)
  • Trichostasis spinulosa Q84.1 (congenital)
  • Twist, twisted
    • hair Q84.1 (congenital)
  • Woolly, wooly hair Q84.1 (congenital) (nevus)

ICD-10-CM Codes Adjacent To Q84.1
Q82.9 Congenital malformation of skin, unspecified
Q83 Congenital malformations of breast
Q83.0 Congenital absence of breast with absent nipple
Q83.1 Accessory breast
Q83.2 Absent nipple
Q83.3 Accessory nipple
Q83.8 Other congenital malformations of breast
Q83.9 Congenital malformation of breast, unspecified
Q84 Other congenital malformations of integument
Q84.0 Congenital alopecia
Q84.1 Congenital morphological disturbances of hair, not elsewhere classified
Q84.2 Other congenital malformations of hair
Q84.3 Anonychia
Q84.4 Congenital leukonychia
Q84.5 Enlarged and hypertrophic nails
Q84.6 Other congenital malformations of nails
Q84.8 Other specified congenital malformations of integument
Q84.9 Congenital malformation of integument, unspecified
Q85 Phakomatoses, not elsewhere classified
Q85.0 Neurofibromatosis (nonmalignant)
Q85.00 Neurofibromatosis, unspecified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.