Q84.4
BillableCongenital leukonychia
Congenital leukonychia
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
Related Codes(8)
Q84.0Congenital alopecia
Q84.1Congenital morphological disturbances of hair, NEC
Q84.2Other congenital malformations of hair
Q84.3Anonychia
Q84.5Enlarged and hypertrophic nails
Q84.6Other congenital malformations of nails
Q84.8Other specified congenital malformations of integument
Q84.9Congenital malformation of integument, unspecified
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(59)
SNOMED CT
- Bart-Pumphrey syndrome1271009
- Knuckle pads, leukonychia, sensorineural deafness, palmoplantar hyperkeratosis syndrome1271009
- Garrod's pads16687001
- Knuckle pads16687001
- Congenital leuconychia47139007
- Congenital leukonychia47139007
- Circumscribed palmoplantar keratoderma239073008
- Localised palmoplantar keratoderma239073008
- Localized palmoplantar keratoderma239073008
- Follicular isthmus cyst254677004
- Isthmus catagen cyst254677004
- Pilar cyst254677004
- Trichilemmal cyst254677004
- Angular cheilitis266429005
- Angular stomatitis266429005
- Perleche266429005
- Perlèche266429005
- Focal acral hyperkeratosis400115004
- Punctate palmoplantar keratoderma402773000
- Genetic syndrome with hypermelanosis402780003
- Leukonychia totalis763792009
- Leukonychia totalis, acanthosis-nigricans-like lesions, abnormal hair syndrome773700005
- FLOTCH syndrome774065001
- Leukonychia totalis, trichilemmal cysts, ciliary dystrophy syndrome774065001
- PLACK (peeling skin, leukonychia, acral punctate keratoses, cheilitis, knuckle pads) syndrome1237509001
- PLACK syndrome1237509001
- Peeling skin, leuconychia, acral punctate keratoses, cheilitis, knuckle pads syndrome1237509001
- Peeling skin, leukonychia, acral punctate keratoses, cheilitis, knuckle pads syndrome1237509001
UMLS
Clinical Terms
- Perleche
- Knuckle pads
- PLACK syndrome
- Peeling skin, leuconychia, acral punctate keratoses, cheilitis, knuckle pads syndrome
- Follicular isthmus cyst
- Bart-Pumphrey syndrome
- Circumscribed palmoplantar keratoderma
- Localised palmoplantar keratoderma
- Knuckle pads, leukonychia, sensorineural deafness, palmoplantar hyperkeratosis syndrome
- Isthmus catagen cyst
- Congenital leuconychia
- Trichilemmal cyst
- Congenital leukonychia (disorder)
- Pilar cyst
- Punctate palmoplantar keratoderma
- FLOTCH syndrome
- Localized palmoplantar keratoderma
- Genetic syndrome with hypermelanosis
- PLACK (peeling skin, leukonychia, acral punctate keratoses, cheilitis, knuckle pads) syndrome
- Peeling skin, leukonychia, acral punctate keratoses, cheilitis, knuckle pads syndrome
- Leukonychia totalis, trichilemmal cysts, ciliary dystrophy syndrome
- Angular cheilitis
- Focal acral hyperkeratosis
- Leukonychia totalis, acanthosis-nigricans-like lesions, abnormal hair syndrome
- Angular stomatitis
- Garrod's pads
- Leukonychia totalis
- Perlèche
Frequently Asked Questions
What is the ICD-10 code for congenital leukonychia?
The ICD-10-CM code for congenital leukonychia is Q84.4. The full clinical description is "Congenital leukonychia". Q84.4 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code Q84.4 mean?
ICD-10-CM code Q84.4 represents “Congenital leukonychia”. It is classified under Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities and is a billable/specific code that can be used on a claim.
Is Q84.4 a billable code?
Yes, Q84.4 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is Q84.4 in?
Q84.4 is in Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (codes Q00-Q99).
What SNOMED CT codes does Q84.4 map to?
Q84.4 maps to 13 SNOMED CT concepts: 266429005, 1271009, 239073008, 47139007, 774065001, and 8 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for Q84.4?
Q84.4 is linked to 1 UMLS Concept Unique Identifier: C0266001. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does Q84.4 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like congenital leukonychia affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of Q84.4?
Q84.4 maps to the ICD-11 code: EC22.0 (Inherited deformities of nails).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.