Z55 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Problems related to education and literacy.
Type 1 excludes
Disorders of psychological development (F80-F89)
Codes
Z55.0
Illiteracy and low-level literacy
Z55.1
Schooling unavailable and unattainable
Z55.2
Failed school examinations
Z55.3
Underachievement in school
Z55.4
Educational maladjustment and discord with teachers and classmates
Z55.5
Less than a high school diploma
Z55.6
Problems related to health literacy
Z55.8
Other problems related to education and literacy
Z55.9
Problems related to education and literacy, unspecified
Versions
2026
No changes
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code