As of Unicode version 9.0 Cyrillic script is encoded across several blocks, all in the BMP:
The characters in the range U+0400–U+045F are basically the characters from ISO 8859-5 moved upward by 864 positions. The next characters in the Cyrillic block, range U+0460–U+0489, are historical letters, some being still used for Church Slavonic. The characters in the range U+048A–U+04FF and the complete Cyrillic Supplement block (U+0500-U+052F) are additional letters for various languages that are written with Cyrillic script. Two characters in the block Phonetic Extensions block complete the Uralic Phonetic Alphabet: U+1D2B ᴫ CYRILLIC LETTER SMALL CAPITAL EL and U+1D78 ᵸ MODIFIER LETTER CYRILLIC EN.
Unicode includes few precomposed accented Cyrillic letters; the others can be combined by adding U+0301 ("combining acute accent") after the accented vowel (e.g., ы́ э́ ю́ я́) (see below).
The following two diacritical marks not specific to Cyrillic can be used with Cyrillic text:
In the table below, small letters are ordered according to their Unicode numbers; capital letters are placed immediately before the corresponding small letters. Standard Unicode names and canonical decompositions are included.
Blocks
The Cyrillic block (U+0400 – U+04FF) was added to the Unicode Standard in October, 1991 with the release of version 1.0:
The Cyrillic Supplement block (U+0500 – U+052F) was added to the Unicode Standard in March, 2002 with the release of version 3.2:
The Cyrillic Extended-A (U+2DE0 – U+2DFF) and Cyrillic Extended-B (U+A640 – U+A69F) blocks were added to the Unicode Standard in April, 2008 with the release of version 5.1:
The Cyrillic Extended-C block (U+1C80 – U+1C8F) was added to the Unicode Standard in June, 2016 with the release of version 9.0: