This code system https://fhir.hl7.org.uk/STU3/CodeSystem/CareConnect-HumanLanguage-1 defines the following codes:
| Code | Display | Definition |
| q1 | Braille | |
| q2 | American Sign Language | |
| q3 | Australian Sign Language | |
| q4 | British Sign Language | |
| q5 | Makaton | |
| aa | Afar | |
| ab | Abkhazian | |
| af | Afrikaans | |
| ak | Akan | |
| sq | Albanian | |
| am | Amharic | |
| ar | Arabic | |
| an | Aragonese | |
| hy | Armenian | |
| as | Assamese | |
| av | Avaric | |
| ae | Avestan | |
| ay | Aymara | |
| az | Azerbaijani | |
| ba | Bashkir | |
| bm | Bambara | |
| eu | Basque | |
| be | Belarusian | |
| bn | Bengali | |
| bh | Bihari languages | |
| bi | Bislama | |
| bo | Tibetan | |
| bs | Bosnian | |
| br | Breton | |
| bg | Bulgarian | |
| my | Burmese | |
| ca | Catalan; Valencian | |
| cs | Czech | |
| ch | Chamorro | |
| ce | Chechen | |
| zh | Chinese | |
| cu | Church Slavic; Old Slavonic; Church Slavonic; Old Bulgarian; Old Church Slavonic | |
| cv | Chuvash | |
| kw | Cornish | |
| co | Corsican | |
| cr | Cree | |
| cy | Welsh | |
| da | Danish | |
| de | German | |
| dv | Divehi; Dhivehi; Maldivian | |
| nl | Dutch; Flemish | |
| dz | Dzongkha | |
| el | Greek, Modern (1453-) | |
| en | English | |
| eo | Esperanto | |
| et | Estonian | |
| ee | Ewe | |
| fo | Faroese | |
| fa | Persian | |
| fj | Fijian | |
| fi | Finnish | |
| fr | French | |
| fy | Western Frisian | |
| ff | Fulah | |
| ka | Georgian | |
| gd | Gaelic; Scottish Gaelic | |
| ga | Irish | |
| gl | Galician | |
| gv | Manx | |
| gn | Guarani | |
| gu | Gujarati | |
| ht | Haitian; Haitian Creole | |
| ha | Hausa | |
| he | Hebrew | |
| hz | Herero | |
| hi | Hindi | |
| ho | Hiri Motu | |
| hr | Croatian | |
| hu | Hungarian | |
| ig | Igbo | |
| is | Icelandic | |
| io | Ido | |
| ii | Sichuan Yi; Nuosu | |
| iu | Inuktitut | |
| ie | Interlingue; Occidental | |
| ia | Interlingua (International Auxiliary Language Association) | |
| id | Indonesian | |
| ik | Inupiaq | |
| it | Italian | |
| jv | Javanese | |
| ja | Japanese | |
| kl | Kalaallisut; Greenlandic | |
| kn | Kannada | |
| ks | Kashmiri | |
| kr | Kanuri | |
| kk | Kazakh | |
| km | Central Khmer | |
| ki | Kikuyu; Gikuyu | |
| rw | Kinyarwanda | |
| ky | Kirghiz; Kyrgyz | |
| kv | Komi | |
| kg | Kongo | |
| ko | Korean | |
| kj | Kuanyama; Kwanyama | |
| ku | Kurdish | |
| lo | Lao | |
| la | Latin | |
| lv | Latvian | |
| li | Limburgan; Limburger; Limburgish | |
| ln | Lingala | |
| lt | Lithuanian | |
| lb | Luxembourgish; Letzeburgesch | |
| lu | Luba-Katanga | |
| lg | Ganda | |
| mk | Macedonian | |
| mh | Marshallese | |
| ml | Malayalam | |
| mi | Maori | |
| mr | Marathi | |
| ms | Malay | |
| mg | Malagasy | |
| mt | Maltese | |
| mn | Mongolian | |
| na | Nauru | |
| nv | Navajo; Navaho | |
| nr | Ndebele, South; South Ndebele | |
| nd | Ndebele, North; North Ndebele | |
| ng | Ndonga | |
| ne | Nepali | |
| nn | Norwegian Nynorsk; Nynorsk, Norwegian | |
| nb | Bokmal, Norwegian; Norwegian Bokmal | |
| no | Norwegian | |
| ny | Chichewa; Chewa; Nyanja | |
| oc | Occitan (post1500) | |
| oj | Ojibwa | |
| or | Oriya | |
| om | Oromo | |
| os | Ossetian; Ossetic | |
| pa | Panjabi; Punjabi | |
| pi | Pali | |
| pl | Polish | |
| pt | Portuguese | |
| ps | Pushto; Pashto | |
| qu | Quechua | |
| rm | Romansh | |
| ro | Romanian; Moldavian; Moldovan | |
| rn | Rundi | |
| ru | Russian | |
| sg | Sango | |
| sa | Sanskrit | |
| sr | Serbian | |
| si | Sinhala; Sinhalese | |
| sk | Slovak | |
| sl | Slovenian | |
| se | Northern Sami | |
| sm | Samoan | |
| sn | Shona | |
| sd | Sindhi | |
| so | Somali | |
| st | Sotho, Southern | |
| es | Spanish; Castilian | |
| sc | Sardinian | |
| ss | Swati | |
| su | Sundanese | |
| sw | Swahili | |
| sv | Swedish | |
| ty | Tahitian | |
| ta | Tamil | |
| tt | Tatar | |
| te | Telugu | |
| tg | Tajik | |
| tl | Tagalog | |
| th | Thai | |
| ti | Tigrinya | |
| to | Tonga (Tonga Islands) | |
| tn | Tswana | |
| ts | Tsonga | |
| tk | Turkmen | |
| tr | Turkish | |
| tw | Twi | |
| ug | Uighur; Uyghur | |
| uk | Ukrainian | |
| ur | Urdu | |
| uz | Uzbek | |
| ve | Venda | |
| vi | Vietnamese | |
| vo | Volapuk | |
| wa | Walloon | |
| wo | Wolof | |
| xh | Xhosa | |
| yi | Yiddish | |
| yo | Yoruba | |
| za | Zhuang; Chuang | |
| zu | Zulu | |