ICD-10 Diagnosis Code Q84.6

Other congenital malformations of nails

Diagnosis Code Q84.6

ICD-10: Q84.6
Short Description: Other congenital malformations of nails
Long Description: Other congenital malformations of nails
This is the 2017 version of the ICD-10-CM diagnosis code Q84.6

Code Classification
  • Congenital malformations, deformations and chromosomal abnormalities
    • Other congenital malformations (Q80-Q89)
      • Other congenital malformations of integument (Q84)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code Q84.6 is grouped in the following Diagnostic Related Group(s) (MS-DRG v33.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

Present on Admission (POA) Additional informationCallout TooltipPresent on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

The code Q84.6 is exempt from POA reporting.

  • Alopecia, nail dystrophy, ophthalmic complications, thyroid dysfunction, hypohidrosis, ephelides, enteropathy and respiratory tract infections
  • Bifid digit
  • Bifid nail
  • Congenital abnormal shape of digit
  • Congenital absence of jaw
  • Congenital anomaly in number of teeth
  • Congenital anomaly of nail
  • Congenital clubbing
  • Congenital clubnail
  • Congenital koilonychia
  • Congenital malalignment of the toenails
  • Congenital onychatrophy
  • Congenital onychodysplasia of index fingers
  • Congenital pterygium of nail
  • Curly hair, ankyloblepharon, nail dysplasia syndrome
  • Developmental abnormality of nail
  • Developmental and/or congenital abnormality of nail
  • Ectodermal dysplasia with hair-nail defect
  • Ectodermal dysplasia with nail defect
  • Genetic disorder of nail
  • Hereditary racquet nails
  • Hypodontia and nail dysgenesis
  • Inherited deformity of nail
  • Koilonychia
  • Macronychia
  • Nail deformity
  • Oto-onycho-peroneal syndrome
  • Pachydermoperiostosis of nail
  • Partial congenital absence of teeth
  • Polyonychia
  • Triphalangeal thumbs with onychodystrophy

Index of Diseases and Injuries
References found for the code Q84.6 in the Index of Diseases and Injuries:

Information for Patients

Nail Diseases

Your toenails and fingernails protect the tissues of your toes and fingers. They are made up of layers of a hardened protein called keratin, which is also in your hair and skin. The health of your nails can be a clue to your overall health. Healthy nails are usually smooth and consistent in color. Specific types of nail discoloration and changes in growth rate can be signs of lung, heart, kidney, and liver diseases, as well as diabetes and anemia. White spots and vertical ridges are harmless.

Nail problems that sometimes require treatment include

  • Bacterial and fungal infections
  • Ingrown nails
  • Tumors
  • Warts

Keeping your nails clean, dry, and trimmed can help you avoid some problems. Do not remove the cuticle, which can cause infection.

  • Aging changes in hair and nails
  • Fungal nail infection
  • Ingrown toenail
  • Nail abnormalities
  • Nail injuries
  • Paronychia
  • Splinter hemorrhages

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