| R47 | Speech disturbances, not elsewhere classified |
| R47.0 | Dysphasia and aphasia |
| R47.01 | Aphasia |
| R47.02 | Dysphasia |
| R47.1 | Dysarthria and anarthria |
| R47.8 | Other speech disturbances |
| R47.81 | Slurred speech |
| R47.82 | Fluency disorder in conditions classified elsewhere |
| R47.89 | Other speech disturbances |
| R47.9 | Unspecified speech disturbances |
| R48 | Dyslexia and other symbolic dysfunctions, not elsewhere classified |
| R48.0 | Dyslexia and alexia |
| R48.1 | Agnosia |
| R48.2 | Apraxia |
| R48.3 | Visual agnosia |
| R48.8 | Other symbolic dysfunctions |
| R48.9 | Unspecified symbolic dysfunctions |
| R49 | Voice and resonance disorders |
| R49.0 | Dysphonia |
| R49.1 | Aphonia |
| R49.2 | Hypernasality and hyponasality |
| R49.21 | Hypernasality |
| R49.22 | Hyponasality |
| R49.8 | Other voice and resonance disorders |
| R49.9 | Unspecified voice and resonance disorder |