ICD-9-CM and ICD-10-CM codes for Chronic Kidney Disease (CKD) stages

Demographic characteristics of all patients, among Medicare (aged 65+ years), Optum Clinformatics™ (ages 22 or older) and Veterans Affairs (ages 22 or older) patients, 2016

Prevalence of comorbid conditions by diagnosis codes (CKD, CVD, & DM), (a) total & (b) one or more, among Medicare (aged 65+ years) , Optum Clinformatics™ (aged 22-64 years) and Veterans Affairs (aged 22-64 years) patients, 2016

Percent of patients with CKD by demographic characteristics, among individuals aged 65+ years in NHANES (2011-2016), Optum ClinformaticsTM (2016), Medicare 5% sample (2016), and Veterans Affairs (2016) datasets

Prevalence of CKD, by demographic characteristics and comorbidities, among Medicare 5% sample (aged 65+ years), Optum Clinformatics™ (ages 22 or older), and Veterans Affairs (ages 22 or older) patients overall, and with diabetes mellitus or hypertension, 2016

Figure 2.1
Prevalence of CKD by state among Medicare 5% sample (aged 65+ years) and Optum Clinformatics™ (ages 22 or older) patients, 2016
(a) Medicare 5%
Medicare 5%
Data Source: Special analyses, Medicare 5% sample (aged 65 and older) and Optum Clinformatics™ data (ages 22 or older) alive & eligible for all of 2016.
(b) Optum Clinformatics™
Optum Clinformatics™
Data Source: Special analyses, Medicare 5% sample (aged 65 and older) and Optum Clinformatics™ data (ages 22 or older) alive & eligible for all of 2016.

Figure 2.2
Trends in prevalence of recognized CKD, overall and by CKD stage, among Medicare patients (aged 65+ years), 2000-2016
Trends in prevalence of recognized CKD, overall and by CKD stage, among Medicare patients (aged 65+ years), 2000-2016
Data Source: Special analyses, Medicare 5% sample. Known CKD stages presented as bars; curve showing “All codes” includes known CKD stages (ICD-9 codes 585.1-585.5 or ICD-10 codes N18.1-N18.5) and the CKD-stage unspecified codes (ICD-9 code 585.9, ICD-10 code N18.9 and remaining non-stage specific CKD codes). For years 2000-2015, ICD-9 codes are used to identify CKD; additionally, starting October 1, 2015, ICD-10 codes are used to identify CKD. Note: In previous years, this graph reported 585.9 codes as a component of the stacked bars. Abbreviation: CKD, chronic kidney disease.

Change in CKD status from 2011 to 2016, among Medicare patients (aged 65+ years) alive and without ESRD in 2011

Figure 2.3
Trends in percent of patients with testing of urine albumin (a) in Medicare 5% sample (aged 65+ years), & (b) Optum Clinformatics™ (aged 22-64 years) patients without a diagnosis of CKD, by year from 2006 to 2016
(a) Medicare 5%
Medicare 5%
Data Source: Special analyses, Medicare 5% sample aged 65 and older with Part A & B coverage in the prior year and Optum Clinformatics™ patients aged 22-64 years. Tests tracked during each year. Abbreviations: CKD, chronic kidney disease; DM, diabetes mellitus; HTN, hypertension.
(b) Optum Clinformatics™
Optum Clinformatics™
Data Source: Special analyses, Medicare 5% sample aged 65 and older with Part A & B coverage in the prior year and Optum Clinformatics™ patients aged 22-64 years. Tests tracked during each year. Abbreviations: CKD, chronic kidney disease; DM, diabetes mellitus; HTN, hypertension.

Figure 2.4
Trends in percent of patients with testing of urine albumin in (a) Medicare 5% (aged 65+ years), & (b) Optum Clinformatics™ (aged 22-64 years) patients with a diagnosis of CKD, by year from 2006-2016
(a) Medicare 5%
Medicare 5%
Data Source: Special analyses, Medicare 5% sample (aged 65 and older) with Part A & B coverage in the prior year and Optum Clinformatics™ population (aged 22-64 years). Tests tracked during each year. Abbreviations: CKD, chronic kidney disease; DM, diabetes mellitus; HTN, hypertension.
(b) Optum Clinformatics™
Optum Clinformatics™
Data Source: Special analyses, Medicare 5% sample (aged 65 and older) with Part A & B coverage in the prior year and Optum Clinformatics™ population (aged 22-64 years). Tests tracked during each year. Abbreviations: CKD, chronic kidney disease; DM, diabetes mellitus; HTN, hypertension.

Percent of patients with a physician visit in 2016 after a CKD diagnosis in 2015, among Medicare 5% patients (aged 65+ years)

Figure 2.5
Percent of CKD patients in 2015 with physician visit (nephrologist, primary care provider, both, and neither), with laboratory testing in the following year (2016), by comorbidity
Percent of CKD patients in 2015 with physician visit (nephrologist, primary care provider, both, and neither), with laboratory testing in the following year (2016), by comorbidity
Data Source: Special analyses, Medicare 5% sample aged 65 and older alive & eligible for all of 2016, with a CKD diagnosis claim based on ICD-9 diagnostic codes and a physician visit in 2015. Patient visits with both PCP and nephrologists are classified as nephrologist. Abbreviations: CKD, chronic kidney disease; DM, diabetes mellitus; HTN, hypertension; PCP, primary care physician.