2027 ICD-10-CM Diagnosis Code Q84.0Congenital alopecia
ICD-10-CM Codes›Q00-Q99›Q80-Q89›Q84
- Billable — Valid for Submission
- POA Exempt
- Not Chronic
Q84.0 is a billable ICD-10-CM diagnosis code for congenital alopecia. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 606 through 607. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified congenital anomalies.
Code Identity
Code Classification
Present on Admission (POA)Billing
Q84.0 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Other congenital malformations (Q80-Q89).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acroosteolysis
- Alopecia and intellectual disability with hypergonadotropic hypogonadism syndrome
- Alopecia, contracture, dwarfism, intellectual disability syndrome
- Alopecia, nail dystrophy, ophthalmic complications, thyroid dysfunction, hypohidrosis, ephelides, enteropathy and respiratory tract infections
- Alopecia, progressive neurological defect, endocrinopathy syndrome
- Alopecia, psychomotor epilepsy, periodontal pyorrhea, intellectual disability syndrome
- Atrichia congenita
- Atrichia with papular lesions
- Autosomal dominant palmoplantar keratoderma and congenital alopecia
- Autosomal recessive palmoplantar keratoderma and congenital alopecia syndrome
- Choroidal atrophy and alopecia syndrome
- Congenital alopecia
- Congenital alopecia with keratin cysts
- Congenital dysplasia of nail unit
- Congenital generalized alopecia
- Congenital hypotrichia
- Congenital ichthyosis with hypotrichosis syndrome
- Congenital localized alopecia
- Congenital retrognathism
- Cutaneous syndrome with ichthyosis
- Cutis laxa, autosomal recessive
- Dwarfism, alopecia, pseudoanodontia, cutis laxa
- False anodontia
- Frontonasal dysplasia sequence
- Frontonasal dysplasia with alopecia and genital anomaly syndrome
- GAPO syndrome
- Hereditary acroosteolysis
- Hypoplasia of thumb
- Hypotrichosis and intellectual disability syndrome Lopes type
- Hypotrichosis with juvenile macular degeneration syndrome
- Hypotrichosis with keratosis pilaris and lentiginosis
- Hypotrichosis, lymphedema, telangiectasia, renal defect syndrome
- Hypotrichosis, osteolysis, periodontitis, palmoplantar keratoderma syndrome
- Ichthyosis follicularis with alopecia and photophobia
- Ichthyosis, alopecia, eclabion, ectropion, intellectual disability syndrome
- Keratosis pilaris
- Lamellar ichthyosis
- MACS syndrome
- Mandibulofacial dysostosis with alopecia
- Marie Unna syndrome
- Neonatal sclerosing cholangitis, ichthyosis, hypotrichosis syndrome
- Odonto onycho dysplasia with alopecia syndrome
- Odonto-onychial dysplasia with alopecia
- Periodontitis with genetic disorder
- Poikiloderma, alopecia, retrognathism, cleft palate syndrome
- Pyorrhea
- Recession of bone
- Sclerosing cholangitis
- Severe T-cell immunodeficiency, congenital alopecia, nail dystrophy syndrome
- Short stature, onychodysplasia, facial dysmorphism, hypotrichosis syndrome
- Spondyloepimetaphyseal dysplasia, hypotrichosis syndrome
- Sutural alopecia
- Taurodontia with absent teeth and sparse hair syndrome
- Thumb deformity, alopecia, pigmentation anomaly syndrome
- Triangular alopecia
- Vertical alopecia
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Q84.0: its own notes plus those printed at Chapter 17. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Congenital atrichosis
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Notes
General instructions on how these codes are used.
- Codes from this chapter are not for use on maternal records
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name Q84.0, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming Q84.0: they are not reported together with it, unless the two conditions are unrelated.
- Block L60-L75 Disorders of skin appendagescongenital malformations of integument (Q84.-) names Q84.-, which includes this code
- P83 Other conditions of integument specific to newborn
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Congenital Alopecia
a congenital condition characterized by the absence of hair on the scalp or entire body. the lack of hair is rarely absolute and is usually accompanied by incompletely grown, lanugo-like hair. it affects males twice as much as females and a familial tendency is common.
Patient EducationClinical
Hair Problems
The average person has 5 million hairs. Hair grows all over your body except on your lips, palms, and the soles of your feet. It takes about a month for healthy hair to grow half an inch. Most hairs grow for up to six years and then fall out. New hairs grow in their place.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert Q84.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Q84.0Overview
What is the ICD-10 code for congenital alopecia?
The ICD-10-CM code for congenital alopecia is Q84.0 (sometimes written as Q840). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Q84.0 (Other congenital malformations of integument) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report congenital alopecia on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Q84.0 group to?
When congenital alopecia is the principal diagnosis on an inpatient stay, it groups to MS-DRG 607, 606, with relative weights from 0.8772 to 1.5721 depending on complications. Higher weights mean higher Medicare reimbursement.
Is Q84.0 exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for congenital alopecia on inpatient claims. The code appears in the Other congenital malformations (Q80-Q89) range of the CMS exempt list.
What is the ICD-9 equivalent of Q84.0?
Under the General Equivalence Mappings, congenital alopecia converts to ICD-9-CM 757.4 (hair anomalies NEC). The mapping is approximate, so confirm the match fits the documentation.
