Table 4.
Estimated Relative Prevalence Categories of and Number of States Listing Diagnosed Conditions Identified on 10 or More State, District of Columbia, and Territory Lists for Eligibility for IDEA Part C Early Intervention Services
| Condition | Estimated Relative Prevalence Category | No. States |
|---|---|---|
| Hearing impairment | Common | 38 |
| Fetal alcohol syndrome | Common | 34 |
| Down syndrome (trisomy 21) | Common | 32 |
| Vision impairment | Common | 29 |
| Cerebral palsy | Common | 27 |
| Fragile X syndrome | Rare | 26 |
| Autism spectrum disorder | Very common | 25 |
| Waardenburg syndrome, Types I and II | Very rare | 24 |
| Intraventricular hemorrhage | Unknown | 22 |
| Cleft palate with or without cleft lip | Rare | 22 |
| Tuberous sclerosis complex | Rare | 22 |
| Trisomy 18 (Edwards syndrome) | Rare | 22 |
| Hydrocephalus | Rare | 21 |
| Prematurity | Very common | 21 |
| Holoprosencephaly | Very rare | 21 |
| Attachment disorders | Very common | 20 |
| Spinal cord injuries | Very rare | 20 |
| Meningocele | Rare | 20 |
| Arthrogryposis | Rare | 20 |
| Encephalopathy, congenital | Unknown | 19 |
| Peroxisomal disorders | Very rare | 19 |
| Low birth weight | Very common | 19 |
| Cytomegalovirus infection | Common | 19 |
| Rubinstein-Taybi syndrome | Very rare | 19 |
| Angelman syndrome | Very rare | 19 |
| Cri-du-chat syndrome | Very rare | 18 |
| Herpes simplex | Very rare | 17 |
| Inborn errors of metabolism | Very common | 17 |
| Failure to thrive | Very common | 17 |
| Anomalies of the brain | Unknown | 17 |
| de Lange syndrome | Very rare | 17 |
| Hypothyroidism | Rare | 16 |
| Galactosemia | Very rare | 16 |
| Miller-Dieker syndrome | Very rare | 16 |
| Microdactyly | Very rare | 16 |
| CHARGE syndrome/association | Very rare | 16 |
| Lead poisoning | Very rare | 16 |
| Tracheostomy | Rare | 16 |
| AIDS | Very rare | 15 |
| Wilson disease | Very rare | 15 |
| Treacher Collins syndrome | Very rare | 15 |
| VACTERL syndrome | Very rare | 15 |
| Myasthenia | Very rare | 14 |
| Muscular dystrophy | Rare | 14 |
| Microcephaly | Very rare | 14 |
| Williams syndrome | Rare | 14 |
| Ventilator dependent | Very rare | 14 |
| DiGeorge syndrome | Rare | 13 |
| Leukodystrophy | Very rare | 13 |
| Myotubular myopathy | Very rare | 13 |
| Neural tube defect | Rare | 13 |
| Tetralogy of Fallot | Rare | 13 |
| Phocomelia | Very rare | 13 |
| Marfan syndrome | Rare | 12 |
| Turner syndrome | Very rare | 12 |
| Klinefelter syndrome | Common | 11 |
| Propionic acidemia | Very rare | 10 |
| Hurler-Sheie syndrome | Very rare | 10 |
| Cystic fibrosis | Rare | 10 |
| Infantile spasms | Rare | 10 |
| Toxoplasmosis, congenital | Very rare | 10 |
| Encephalopathy, hypoxic | Common | 10 |
| Encephalocele | Very rare | 10 |
| Spina bifida | Rare | 10 |
| Persistent hyperplastic primary vitreous | Unknown | 10 |
| Russell-Silver syndrome | Very rare | 10 |
Note. Very rare ≤ 1/10,000 cases; rare = 1/9,999 to 1/1,000 cases; common = 1/999 to 1/100 cases; very common ≥ 1/99 cases. For estimate source, see Supplement Digital Content (available at: http://links.lww.com/IYC/A13).