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ICD-10-CM Code Q84.4
Congenital leukonychia

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
POA Exempt
POA Exempt Code
The Center for Medicare & Medicaid Services (CMS) requires medical coders to indicate whether or not a condition was present at the time of admission, in order to properly assign MS-DRG codes. This "Present On Admission" (POA) indicator is recorded on CMS form 4010A.
| ICD-10 from 2011 - 2016

Q84.4 is a billable ICD code used to specify a diagnosis of congenital leukonychia. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

POA Indicators on CMS form 4010A are as follows:

IndicatorMeaningCMS Will Pay CC/MCC DRG Costs
YDiagnosis was present at time of inpatient admissionYes
NDiagnosis was not present at time of inpatient admissionNo
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.No
WClinically undetermined. Provider unable to clinically determine whether the condition was present at the time of inpatient admission.Yes
1Exempt from POA reportingNo


The ICD code Q844 is used to code Leukonychia

Leukonychia (or leuconychia), also known as white nails or milk spots, is a medical term for white discoloration appearing on nails.:658–9 It is derived from the Greek words leuko ("white") and onux ("nail"). The most common cause is injury to the base of the nail (the matrix) where the nail is formed.

Specialty: Dermatology
MeSH Codes: ,
ICD 9 Codes: 703.8, 757.5

Leukonychia

Source: Wikipedia

MS-DRG Mapping

  • DRG Group #606-607 - Minor skin disorders with MCC.
  • DRG Group #606-607 - Minor skin disorders without MCC.

Related Concepts SNOMET-CT

  • Knuckle pads, deafness AND leukonychia syndrome (disorder)

ICD-10-CM Alphabetical Index References for 'Q84.4 - Congenital leukonychia'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code Q84.4. Click on any term below to browse the alphabetical index.

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

Specified anomalies of nails (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code Q84.4 and a single ICD9 code, 757.5 is an approximate match for comparison and conversion purposes.


Parent Code: Q84 - Other congenital malformations of integument

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/Q844