2026 ICD-10-CM Diagnosis Code Z55Problems related to education and literacy

ICD-10-CM Codes›Z00–Z99›Z55-Z65›Z55

ICD-10-CM Z55
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z55 is a non-billable ICD-10-CM category code for problems related to education and literacy, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Z55.0, Z55.1, Z55.2, and Z55.3.

Code Identity

ICD-10-CM Code
Z55
Billable Status
No — Non-Billable Category
Code Describes
Problems related to education and literacy
Chapter
Z55-Z65
Persons with potential health hazards related to socioeconomic and psychosocial circumstances

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ55-Z65Persons with potential health hazards related to socioeconomic and psychosocial circumstances
CategoryZ55Problems related to education and literacy
This CodeZ55Problems related to education and literacy

Specific Coding for Problems related to education and literacyOverview

Non-specific codes like Z55 require more characters. Use one of these billable codes instead:

  • Use Z55.0 for Illiteracy and low-level literacy

  • Use Z55.1 for Schooling unavailable and unattainable

  • Use Z55.2 for Failed school examinations

  • Use Z55.3 for Underachievement in school

  • Use Z55.4 for Educational maladjustment and discord with teachers and classmates

  • Use Z55.5 for Less than a high school diploma

  • Use Z55.6 for Problems related to health literacy

  • Use Z55.8 for Other problems related to education and literacy

  • Use Z55.9 for Problems related to education and literacy, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • disorders of psychological development F80 F89

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z55Overview

Is Z55 (Problems related to education and literacy) a billable code?

No. This is a category header that groups the codes for problems related to education and literacy, and headers cannot be submitted on claims. Claims for problems related to education and literacy need a more specific code from this category, such as Z55.0, Z55.1, and Z55.2.