Elixhauser Comorbidity - Valvular Disease

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Description

ICD-9, ICD-10 based comorbidity measure derived from hospital discharge and professional billing diagnoses administrative codes. This phenotype does not reference anesthesia history and physical diagnoses or problem summary list diagnoses. Codes are based upon the Quan et al article (see below for full reference).

Reference:

(1) Quan, et. al. “Coding Algorithms for Defining Comorbidities in ICD-9- CM and ICD-10 Administrative Data”, Medical Care, 43 (11), Nov 2005

Limitation

This phenotype relies on ICD-9 & ICD-10 codes. These codes must be included in the hospital discharge or pro fee administrative billing data submitted to MPOG. This collation does not reference problem summary list diagnoses.

To be designated as having the specified comorbidity, one of the specific diagnosis codes must be attached to the procedure dated between 365 days before or 7 days after the procedure to be considered for this phenotype (please see the list of codes in the logic section).

MPOG is unable to determine if diagnosis was present on admission.

Data quality is limited to individual site documentation accuracy, completeness, and variable mapping, which is performed by each site, independently. MPOG, as the coordinating center, reviews data quality at each data upload and monthly via Data Diagnostics and Case Validation tools. This review, while thorough, may not contain all data elements relevant to this phenotype and thus should be carefully reviewed by the user.

Value Type

Categorical

Enumeration

Value	Value Code	Definition

Return Columns

Name	Data Type

Granularity

Logic

Patients with the following ICD codes will be classified as a 1 for yes. If the patient has ICD codes, but none listed on the table are present, the patient will be classified as a 0. If there are no ICD codes, the data will be classified as missing and reported as -999.

Data source:

aims_billingdiagnoses

Using the DiagnosisCleaned phenotype, this collation looks as the following timeframe:

Prior time frame – 365 days (before the operation date)

Post time frame – extends 7 days after service end

	ICD-9 Codes	Description	ICD-10 Code conversion
Components1	39[4-7] 39[4-7].% 424 424.%	Valve diseases including rheumatic	I09.[18]% I0[5-8].% I3[4-9] I3[4-9].%
	093.2%	Syphilitic heart disease	A52.0%
	746.[3–6]%	Congenital	Q23.[0–3]%
	V42.2% V43.3%	Prosthetic or xenogenic heart valve	Z95.[2–4]%