Category · F80-F89 block
F80 — Specific developmental disorders of speech and language
Terminology note: "Specific developmental disorder of speech and language" is a classification term, not a claim about a single cause: it names a pattern (speech/language skills substantially below what would be expected for age and general ability, present from early development) after excluding hearing loss, a global developmental delay, and autism as the primary explanation. It is not interchangeable with everyday phrases like "late talker," which can describe normal variation.
What is this category?
F80 covers children whose spoken language development is significantly behind what would be expected for their age and general ability, in the absence of hearing loss, global intellectual disability, or a pervasive developmental disorder that would better explain it. It is one of this block's four "specific developmental disorder" categories (alongside F81, F82, and F83), sharing the same exclusionary logic taught in a shared capsule.
Core diagnostic concept
F80 requires a genuine discrepancy: speech or language skills clearly and specifically below the level expected for the child's age and general intellectual ability, present from an early stage of development (not an acquired loss), and not better explained by a hearing impairment, an oral/articulatory structural abnormality, global intellectual disability, or autism. All four conditions must hold together — a language delay explained by any one of these alternatives is not F80.
Key diagnostic features
- Marked delay or abnormality in speech/language relative to age and general ability
- The gap is specific to speech/language, not part of a broader global delay across all developmental domains.
- Onset from early development
- Present from the point spoken language would normally be expected to emerge, not an acquired loss after a period of normal language.
- Hearing confirmed adequate
- A hearing impairment sufficient to explain the delay has been ruled out or is not present.
- Not better explained by autism or global intellectual disability
- The four-way exclusion (hearing, structural, general intellect, pervasive developmental disorder) must be checked before this classification is used.
How to weigh evidence
These learning labels are teaching aids, not official ICD-10 terminology (see Sources and Method).
- supports A 4-year-old with marked difficulty forming sentences and a limited vocabulary for age, with age-appropriate play, social interaction, and nonverbal reasoning, and a recently confirmed normal hearing test.
- consistent not decisive Parents describe the child as "a bit behind with talking" with no further detail on hearing, general development, or social interaction.
- raises alternative The same language delay accompanied by limited eye contact, little interest in shared play, and repetitive hand movements — raising a pervasive developmental disorder (F84) as the more complete explanation.
- contradicts or weakens A recent hearing test showing significant hearing loss, which would need to be addressed as the primary explanation before F80 is considered.
- missing and necessary to ask Whether hearing has actually been tested, and how the child's play, social interaction, and nonverbal skills compare to same-age peers.
Diagnostic boundary
F80 requires speech/language delay specifically, with hearing, general intellectual ability, and pervasive developmental features all checked and ruled out as the primary explanation — distinguished from F84 by the absence of the broader social-interaction and restricted-behaviour triad, and from F70-F73 by a specific rather than global pattern of delay.
Full comparisons:
Duration and course
Minimum duration: Not a duration threshold — the criterion is a delay present from the early stages of language development, assessed against age-expected milestones.
Course: Many children show gradual improvement, sometimes substantial, but this does not retrospectively change the classification at the time it applied; milder residual difficulties can persist.
Included presentations
- A pattern of delayed or abnormal speech/language development from an early age, with hearing, general ability, and social/behavioural development otherwise age-appropriate.
Exclusions and distinguishing presentations
| If this is true instead… | Consider | Why |
|---|---|---|
| Language delay explained by a confirmed hearing impairment | hearing_impairment_not_coded_here | A hearing impairment sufficient to explain the delay must be addressed as the primary cause, not classified here. |
| Language delay as part of a broader triad of social-interaction and restricted/repetitive-behaviour features | F84 | A pervasive developmental disorder better accounts for the presentation when the broader triad is present. |
| Language delay fully accounted for by a global developmental delay across all domains | F70 | When general intellectual functioning is globally subnormal and the language delay is proportionate to it, an intellectual disability classification better fits than a specific disorder. |
Four-character subtypes (orientation)
The fourth character distinguishes which aspect of speech/language is primarily affected (articulation, expression, comprehension) — it does not indicate how severe the delay is overall.
- F80.0 — Specific speech articulation disorder
- Speech sound production is below age-expected level, with language comprehension and expression otherwise normal. (in_depth)
- F80.1 — Expressive language disorder
- Ability to use spoken language is markedly below age level, while language comprehension is within normal limits. (in_depth)
- F80.2 — Receptive language disorder
- Understanding of language is below age-expected level, usually with expressive language also affected as a consequence. (in_depth)
- F80.3 — Acquired aphasia with epilepsy [Landau-Kleffner syndrome]
- A loss of previously acquired language skills together with a paroxysmal EEG abnormality, usually between 3 and 7 years — an acquired, not purely developmental, pattern. (taught for orientation only, not separately assessed in this pilot)
- F80.8 — Other developmental disorders of speech and language
- A speech/language pattern not fitting the other listed states. (taught for orientation only, not separately assessed in this pilot)
- F80.9 — Developmental disorder of speech and language, unspecified
- Insufficient information to specify which subtype applies. (taught for orientation only, not separately assessed in this pilot)
External causes to check first
Categories in this block require that the disturbance is not better explained by another external cause listed below. These short capsules are reminders, not full teaching modules.
Boundary capsule — What rules a specific developmental disorder in (and out) across F80-F83
A shared reasoning check for the four 'specific developmental disorder' categories (F80 speech and language, F81 scholastic skills, F82 motor function, F83 mixed) that all share the same underlying diagnostic logic: onset in infancy or childhood, a steady course without the remissions and relapses typical of many other developmental conditions, close association with a specific innate cognitive-processing impairment, and — decisively — a deficit that cannot be explained away by lack of opportunity, by general intellectual level, or by a sensory/motor/neurological deficit that would directly account for it.
What to check:
- Onset and course: is the pattern present from early development with a steady, non-episodic course, rather than an acquired loss of a previously present skill or a fluctuating pattern with remissions and relapses?
- Opportunity to learn: has the child had adequate exposure to the relevant input and instruction (spoken language, schooling, motor practice)? A deficit that is fully explained by a lack of adequate opportunity does not meet a specific developmental disorder.
- General intellectual level: is the specific deficit clearly out of proportion to the person's general intellectual level, rather than a deficit that is simply consistent with, and proportionate to, a lower general intellectual level overall? A specific developmental disorder can co-occur with a lower general level, but the specific deficit must exceed what that general level alone would predict.
- Sensory, motor, or neurological explanation: is there a hearing impairment, visual impairment, or neurological/motor condition that would, on its own, directly explain the observed deficit? If so, that direct explanation is coded and considered first, rather than a specific developmental disorder.
A full developmental, audiological, and psychoeducational assessment by qualified professionals, which is what actually establishes opportunity, general ability, and sensory/neurological status in real practice.
Common learner errors
Worked example — specific language delay versus a broader pervasive pattern
A 4-year-old boy uses far fewer words and shorter sentences than same-age peers. His parents report he plays imaginatively with his older sister, makes eye contact, points to show them things he finds interesting, and enjoys turn-taking games. A recent hearing test was normal, and his non-verbal problem-solving on an informal assessment is age-appropriate.
- Step 1 — Confirm the delay is specific to language: vocabulary and sentence length are behind, while play, non-verbal reasoning, and social engagement are age-appropriate.
- Step 2 — Check hearing: a recent test was normal, ruling out hearing loss as the explanation.
- Step 3 — Check for the broader autism triad: eye contact, shared attention (pointing to show), imaginative play, and turn-taking are all present and age-appropriate — no evidence of the broader pattern.
- Step 4 — Check general ability: non-verbal problem-solving is age-appropriate, so the delay is not part of a global pattern.
- Conclusion — With hearing, general ability, and the broader autism triad all checked and not implicated, a specific developmental disorder of speech and language (F80) is supported.
Interactive practice
- Type A Clear words are missing, but everything else is on track Recognition · Foundational
- Type B A language delay, or a language gap? Boundary discrimination · Transfer
Retrieval prompts
Try answering each of these from memory before revealing where to check. Nothing you think or type here is sent or saved anywhere.
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Name the four things that must be checked and ruled out before an F80 classification is supported.
Reveal answer location
Check Duration and course, Diagnostic boundary, or the rapid revision card below — the cue you need is one of those, in this category's own already-authored wording.
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Explain why a language delay accompanied by limited eye contact and repetitive movements points away from F80.
Reveal answer location
Check Duration and course, Diagnostic boundary, or the rapid revision card below — the cue you need is one of those, in this category's own already-authored wording.
These self-checks are a personal study aid only, visible to you on this page for this visit — they are not stored and do not affect your mastery dimensions.
Rapid revision card
F80: Speech/language specifically delayed from early development, with hearing, general ability, and the broader autism triad all checked and ruled out as the explanation.
Decisive boundary cues:
- Age-appropriate play, eye contact, and social engagement alongside the language delay -> weighs toward F80, not F84.
- A recently confirmed hearing impairment -> weighs away from F80 toward addressing hearing first.
- A delay proportionate to global intellectual functioning across all domains -> weighs toward F70, not F80.
Duration/course: Present from early development, not an acquired loss after a period of normal language.
Nearest alternatives: F81, F84, F70
Common mistake: Assuming any language delay is F80 without checking hearing, general ability, and the broader autism triad.
Retrieval prompt: What single additional piece of information would most help you rule autism in or out here?
(or use your browser's print function) Open full-page printable revision view →
Related glossary terms
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Specific developmental disorder
A disorder (F80-F83) in which a specific skill area — speech and language, scholastic skills, or motor function — fails to develop normally from early childhood, with onset in infancy or childhood, a steady course, and a deficit not explained by inadequate opportunity to learn, by general intellectual level alone, or by a sensory or neurological condition that would directly account for it.
Source basis
WHO ICD-10 international classification structure and code/title (ICD-10 Browser, 2019 English release).
Original educational synthesis, informed by general published clinical-education understanding of ICD-10 F80-F89; no verbatim CDDG or DCR text is reproduced. See Sources and Method for the full policy.
Last reviewed: 2026-09-17. Full policy: Sources and Method.
Educational resource only. This page and its cases teach ICD-10 classification reasoning using fictional scenarios. It does not diagnose real people and should not be used to assess yourself or anyone else. If you are concerned about a child's development, speech, learning, motor skills, or social communication, please speak with a qualified professional for assessment and support.