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HC-199 Update Note:
MEPS HC-199: 2017 Medical Conditions File
Update #3: 11/17/22
The 2016 and 2017 Medical Conditions Public Use Files were re-released in November 2022. The new releases now include the CCSR variables (CCSR1X, CCSR2X, and CCSR3X). In addition, the legacy masking process that resulted in over-masked ICD10CDX codes on the original release (see Update #1 for details) were replaced with the updated masking processes applied to data years 2018 and beyond.
Update #2: 10/22/21
SAS V9, Stata, and XLSX data files have been added.
Update #1: 09/25/20
This update note is obsolete as of the re-release of the 2016 and 2017 Conditions files on 11/17/22 (see Update #3 for details)
For confidentiality purposes, rare conditions in the MEPS Public Use Files (PUFs) are recoded to a broader code or set to missing if the sample size or population
size falls below a specific threshold. When condition coding transitioned from ICD-9 to ICD-10 codes in data year 2016, these masking processes had residual effects on
the 2016 and 2017 Medical Conditions PUFs, resulting in several conditions (ICD-10 codes) being over-masked in these files. As an example, masking processes that were
carried over into 2016 and 2017 had the residual effect of re-coding E55 and G47 to the
‘broader’ codes of E63 and G98, respectively. These masking processes were reviewed and updated for the 2018 data files. The top conditions that were affected include:
Number of people with reported
condition in MEPS PUFs
| ICD-10 |
2016 |
2017 |
2018 |
| E55* VITAMIN D DEFICIENCY |
0 |
0 |
314 |
| E63 OTHER NUTRITIONAL DEFICIENCIES |
371 |
360 |
0 |
| G47* SLEEP DISORDERS |
0 |
0 |
1434 |
| G98 OTHER DISORDERS OF NERVOUS SYSTEM NEC |
1638 |
1596 |
0 |
| H26 OTHER CATARACT |
0 |
0 |
637 |
| I51 COMPLICATIONS AND ILL-DEFINED DESCRIPTIONS OF HEART DISEASE |
0 |
0 |
311 |
| M06 OTHER RHEUMATOID ARTHRITIS |
0 |
636 |
501 |
* 2016 and 2017 masking processes re-coded the ICD-10 codes of E55 and G47 into the broader codes of E63 and G98, respectively.
This residual effect manifests as an apparent sample size shift in 2018 from G98 to G47, and from E63 to E55.
To obtain access to the complete condition data for 2016 and 2017, users must submit a request through the AHRQ Data Center:
https://meps.ahrq.gov/mepsweb/data_stats/onsite_datacenter.jsp
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