Z55.6
ICD-10BillableProblems related to health literacy
Official ICD-10-CM descriptor (FY2026)
Problems related to health literacy
Z55.6 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Difficulty understanding health related information
- Difficulty understanding medication instructions
- Problem completing medical forms
Related codes in Z55
- Z55.0Illiteracy and low-level literacy
- Z55.1Schooling unavailable and unattainable
- Z55.2Failed school examinations
- Z55.3Underachievement in school
- Z55.4Educational maladjustment & discord w teachers & classmates
- Z55.5Less than a high school diploma
- Z55.8Other problems related to education and literacy
- Z55.9Problems related to education and literacy, unspecified
Where this code sits
- Parent code
- Z55
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.