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Indicator Details: Percentage of Patients with a Diagnosis of Hypertension
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The overall unadjusted percentage of patients with a hypertension code (ICD-9-CM or ICD-10-CM diagnosis code) has slightly increased in the last decade for patients aged 65 years or older enrolled in Clinformatics Medicare Advantage insurance.
Chart Explanation: The chart shows on the y-axis (vertical line) the percentage of patients with diagnosis of hypertension. The x-axis (horizontal line) shows the age groups (block of bars) by year, gender, and  race/ethnicity (individual colored bars).
The Clinformatics Medicare Advantage dataset provides paid medical and prescription claims and enrollment information for participants Medicare Advantage plans of a large U.S. managed care health insurance company. 

CKD is defined using ICD-9-CM or ICD-10-CM diagnosis codes, and ESRD is based on ICD diagnosis, CPT procedure, and DRG codes in the Clinformatics Medicare Advantage.
Description of MeasurePrevalence of hypertension (by ICD-9-CM or ICD-10-CM codes) stratified by age, race/ethnicity, gender, diabetes diagnosis and hypertension diagnosis
Data SourceClinformatics Medicare Advantage from Optum Clinformatics™ data mart database (OptumInsight, Eden Prairie, MN)
Type of Data SourceAdministrative
Data SetClinformatics Medicare Advantage enrollees aged 65 years or older
Health Care System DataYes
Regional or NationalRegional
Demographic GroupPatients aged 65 years or older enrolled in Clinformatics Medicare Advantage insurance
NumeratorPatients in denominator with diagnosed hypertension from one inpatient or two outpatient claims by any of the ICD-9-CM or ICD-10-CM
DenominatorPatients aged 65 years or older with a full year of enrollment in a given calendar year.
Primary Data Source IndicatorDiagnosis codes from inpatient and outpatient files
Primary Indicator Method of MeasurementMedical claim
Secondary (1) VariableAge in years at the end of the current calendar year
Secondary (2) VariableRace/Ethnicity
Secondary (3) VariableSex/gender
Secondary (4) VariableDiabetes status determined by the presence of an ICD-9-CM or ICD-10-CM code for diabetes or diabetic complications, on at least one inpatient, outpatient or medical services claim during a given calendar year.
Secondary (5) VariableHypertension status determined by the presence of an ICD-9-CM or ICD-10-CM code for hypertension on at least one inpatient, outpatient or medical services claim during a given calendar year.
Period Currently Available2016
Limitations of IndicatorThe use of an ICD-9-CM or ICD-10-CM diagnosis code as a measure of prevalence, will underestimate the level of hypertension in the general population.
Analytical ConsiderationsIn published literature, CKD is diagnosed by ICD-9-CM or ICD-10-CM codes in alternate ways (one outpatient, two or more outpatient or one inpatient claim). Care must be taken in comparisons.
ICD-9-CM Codes for CKD016.0, 095.4, 189.0,189.9, 223.0, 236.91, 250.4, 271.4, 274.1, 283.11, 403, 404, 440.1, 442.1, 477.3, 572.4, 581-588, 591, 642.1, 646.2, 753.12-753.19, 753.2, 794.4
ICD-10-CM Codes for CKDA18.11, A52.75, B52.0, C64.x, C68.9, D30.0x, D41.0x-D41.2x, D59.3, E08.2x, E09.2x, E10.2x, E10.65, E11.2x, E11.65, E13.2x, E74.8, I12.xx, I13.0, I13.1x, I13.2, K76.7, M10.3x, M32.14, M32.15, N01.x-N08.x, N13.1, N13.1x-N13.39, N14.x,N15.0, N15.8, N15.9, N16, N17.x, N18.1-N18.5, N18.8, N18.9, N19, N25.xx, N26.1, N26.9, O10.4xx, O12.xx, O26.83x, O90.89, Q61.02, Q61.1x-Q61.8, Q26.0-Q26.39, R94.4

Suggested Citation:
Centers for Disease Control and Prevention. Chronic Kidney Disease Surveillance System—United States.
website. http://www.cdc.gov/ckd