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  6. 2024 ICD-10-CM Code Q84.6

2024 ICD-10-CM Diagnosis Code Q84.6

Other congenital malformations of nails

ICD-10-CM Code:
Q84.6
ICD-10 Code for:
Other congenital malformations of nails
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Congenital malformations, deformations and chromosomal abnormalities
    (Q00-Q99)
    • Other congenital malformations
      (Q80-Q89)
      • Other congenital malformations of integument
        (Q84)

Q84.6 is a billable diagnosis code used to specify a medical diagnosis of other congenital malformations of nails. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Alopecia, nail dystrophy, ophthalmic complications, thyroid dysfunction, hypohidrosis, ephelides, enteropathy and respiratory tract infections
  • Autosomal dominant deafness with onychodystrophy syndrome
  • Bifid digit
  • Bifid nail
  • Brachyonychia
  • Clubbing of nail
  • Congenital abnormal shape of rib
  • Congenital anomaly of nail
  • Congenital anomaly of oral mucosa
  • Congenital clubnail
  • Congenital dilatation of colon
  • Congenital isolated onychodysplasia
  • Congenital koilonychia
  • Congenital malalignment of great toenail
  • Congenital malalignment of multiple toenails
  • Congenital onychoatrophy
  • Congenital onychodysplasia of index fingers
  • Congenital osteodystrophy
  • Congenital pectus excavatum
  • Congenital pterygium of nail
  • Curly hair, ankyloblepharon, nail dysplasia syndrome
  • Deafness with onychodystrophy syndrome
  • Deafness with onychodystrophy syndrome
  • Deafness, enamel hypoplasia, nail defect syndrome
  • Deformity of sternum
  • Dermotrichic syndrome
  • DOORS syndrome
  • Ectodermal dysplasia with nail defect
  • Hereditary racquet nails
  • Hirschsprung disease with nail hypoplasia and dysmorphism
  • Hypodontia and nail dysgenesis
  • Inherited deformity of nail
  • Koilonychia
  • Macronychia
  • Malalignment of nail
  • Malalignment of nail
  • Mammary digital nail syndrome
  • Melanin pigmentation of oral mucosa
  • Melanosis of mucosa of body orifice
  • Nail and tooth abnormalities, marginal palmoplantar keratoderma, oral hyperpigmentation syndrome
  • Onychoatrophy
  • Onycho-tricho-dysplasia neutropenia syndrome
  • Oto-onycho-peroneal syndrome
  • Pachydermoperiostosis of nail
  • Pectus deformity of chest
  • Pectus excavatum
  • Pectus excavatum, macrocephaly, dysplastic nails syndrome
  • Pili torti onychodysplasia syndrome
  • Polyonychia
  • Pterygium of nail
  • Severe T-cell immunodeficiency, congenital alopecia, nail dystrophy syndrome
  • Shape of nail - finding
  • Trichothiodystrophy

Clinical Classification

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Congenital clubnail
  • Congenital koilonychia
  • Congenital malformation of nail NOS

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Present on Admission (POA)

Q84.6 is exempt from POA reporting - 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. Review other POA exempt codes here.

CMS POA Indicator Options and Definitions

POA IndicatorReason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert Q84.6 to ICD-9-CM

  • ICD-9-CM Code: 757.5 - Nail anomalies NEC
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.