Z55 — Problems related to education and literacy
Is Z55 billable?
No — Z55 is a non-billable header code. Z55 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 9 billable codes beneath Z55.
Billable codes under this header
- Z55.0Illiteracy and low-level literacy
- Z55.1Schooling unavailable and unattainable
- Z55.2Failed school examinations
- Z55.3Underachievement in school
- Z55.4Educational maladjustment and discord with teachers and classmates
- Z55.5Less than a high school diploma
- Z55.6Problems related to health literacy
- Z55.8Other problems related to education and literacy
- Z55.9Problems related to education and literacy, unspecified
Z55 at a glance
| Code | Z55 |
|---|---|
| Description | Problems related to education and literacy |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with Z55 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- disorders of psychological development (F80-F89)
What codes fall under Z55? (9)
- Z55.0Illiteracy and low-level literacy
- Z55.1Schooling unavailable and unattainable
- Z55.2Failed school examinations
- Z55.3Underachievement in school
- Z55.4Educational maladjustment and discord with teachers and classmates
- Z55.5Less than a high school diploma
- Z55.6Problems related to health literacy
- Z55.8Other problems related to education and literacy
- Z55.9Problems related to education and literacy, unspecified
How long has Z55 existed?
Z55 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with Z55?
ICD-10-CM declares these codes mutually exclusive with Z55 — exactly one of each pair can be correct for a given encounter.