ICD-10-CM · Billable Code
Z55.0 — Illiteracy and low-level literacy
Chapter Z00-Z99: Factors influencing health status and contact with health services
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Z55.1Schooling unavailable and unattainableZ55.2Failed school examinationsZ55.3Underachievement in schoolZ55.4Educational maladjustment & discord w teachers & classmatesZ55.5Less than a high school diplomaZ55.6Problems related to health literacyZ55.8Other problems related to education and literacyZ55.9Problems related to education and literacy, unspecified
Common questions about Z55.0 (Illiteracy and low-level literacy)
What does ICD-10 code Z55.0 mean?
Z55.0 is the ICD-10-CM 2025 code for Illiteracy and low-level literacy. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.
Is Z55.0 a billable diagnosis code?
Yes, Z55.0 is a billable / specific ICD-10-CM code, meaning it can be used by clinicians and hospitals as a primary or secondary diagnosis on claims and electronic health records.
Which ICD-10 chapter does Z55.0 belong to?
Z55.0 belongs to the chapter "Factors influencing health status and contact with health services" (codes Z00-Z99). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Illiteracy and low-level literacy?
For a plain-language explanation of Illiteracy and low-level literacy, ask GoDavaii's Health AI - it explains medical conditions in 22+ Indian languages, free, with no signup. Tap "Ask GoDavaii AI about Illiteracy and low-level literacy" above to get a personalised answer.
Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗