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Code
Description

ICD-10-CM Code Q04.3
Other reduction deformities of brain

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

Q04.3 is a billable ICD code used to specify a diagnosis of other reduction deformities of brain. 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 Q043 is used to code Pachygyria

Pachygyria (from the Greek "pachy" meaning "thick" or "fat" gyri) is a congenital malformation of the cerebral hemisphere. It results in unusually thick convolutions of the cerebral cortex. Typically, children have developmental delay and seizures, the onset and severity depending on the severity of the cortical malformation. Infantile spasms are common in affected children, as is intractable epilepsy.

Specialty: Medical Genetics
MeSH Codes: D054082, C536293
ICD 9 Codes: , 742.2

Coding Notes for Q04.3 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Absence of part of brain
Agenesis of part of brain
Agyria
Aplasia of part of brain
Hydranencephaly
Hypoplasia of part of brain
Lissencephaly
Microgyria
Pachygyria
Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here."
Congenital malformations of corpus callosum - instead, use code Q04.0

MS-DRG Mapping

  • DRG Group #091-093 - Other disorders of nervous system with MCC.
  • DRG Group #091-093 - Other disorders of nervous system with CC.
  • DRG Group #091-093 - Other disorders of nervous system without CC or MCC.
  • DRG Group #793 - Full term neonate with major problems.

Related Concepts SNOMET-CT

  • Congenital hypoplasia of part of brain (disorder)
  • Atelencephaly (disorder)
  • Hydranencephaly (disorder)

ICD-10-CM Alphabetical Index References for 'Q04.3 - Other reduction deformities of brain'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code Q04.3. Click on any term below to browse the alphabetical index.

Pachygyria (Q04.3)
Microgyria(congenital) (Q04.3)
Lissencephalia, lissencephaly (Q04.3)
Hydrancephaly, hydranencephaly (Q04.3)
Agyria (Q04.3)

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

Congenital reduction deformities of brain (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 Q04.3 and a single ICD9 code, 742.2 is an approximate match for comparison and conversion purposes.


Parent Code: Q04 - Other congenital malformations of brain

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/Q043