ICD-10-CM · Chapter 21 · Z00-Z99
Z55 Problems related to education and literacy
Excludes 1 (cannot be coded together)
- disorders of psychological development (F80-F89)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| Z55..0 | Illiteracy and low-level literacy | Yes |
| Z55..1 | Schooling unavailable and unattainable | Yes |
| Z55..2 | Failed school examinations | Yes |
| Z55..3 | Underachievement in school | Yes |
| Z55..4 | Educational maladjustment and discord with teachers and classmates | Yes |
| Z55..5 | Less than a high school diploma | Yes |
| Z55..6 | Problems related to health literacy | Yes |
| Z55..8 | Other problems related to education and literacy | Yes |
| Z55..9 | Problems related to education and literacy, unspecified | Yes |
Last reviewed: September 2026