Z55
⚠ Non-billable
Problems related to education and literacy
ICD-10-CM · FY2026 · Factors Influencing Health Status
Code
Z55
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Factors Influencing Health Status
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code Z55?
ICD-10-CM code Z55 represents Problems related to education and literacy. It is a non-billable header code requiring a more specific subcategory in the Factors Influencing Health Status chapter, effective October 1, 2025 – September 30, 2026.
Is Z55 billable?
No. Z55 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Z55 in?
Z55 belongs to the Factors Influencing Health Status chapter (Z00–Z99) of ICD-10-CM.
Related codes in the Z55 category
Z55.0
Illiteracy and low-level literacy
Billable
Z55.1
Schooling unavailable and unattainable
Billable
Z55.2
Failed school examinations
Billable
Z55.3
Underachievement in school
Billable
Z55.4
Educational maladjustment and discord with teachers and classmates
Billable
Z55.5
Less than a high school diploma
Billable
Z55.6
Problems related to health literacy
Billable
Z55.8
Other problems related to education and literacy
Billable
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