In practice, ISO 639-2 has largely been superseded by ISO 639-3
(2007), which includes codes for all the individual languages in ISO 639-2 plus many more. It also includes the special and reserved codes, and is designed not to conflict with ISO 639-2. ISO 639-3, however, does not include any of the collective languages in ISO 639-2; most of these are included in ISO 639-5
The collective language codes in ISO 639-2 are listed below. Some language groups are noted to be remainder groups, that is excluding languages with their own codes, while other are not. Remainder groups are afa, alg, art, ath, bat, ber, bnt, cai, cau, cel, crp, cus, dra, fiu, gem, inc, ine, ira, khi, kro, map, mis, mkh, mun, nai, nic, paa, roa, sai, sem, sio, sit, sla, ssa, tai and tut, while inclusive groups are apa, arn, arw, aus, bad, bai, bih, cad, car, chb, cmc, cpe, cpf, cpp, dua, hmn, iro, mno, mul, myn, nub, oto, phi, sgn, wak, wen, ypk and znd.
The following code is identified as a collective code in ISO 639-2 but is (at present) missing from ISO 639-5:
Codes registered for 639-2 that are listed as collective codes in ISO 639-5 (and collective codes by name in ISO 639-2):