Codex Mosquensis I designated by Kap or 018 (in the Gregory-Aland numbering), Απρ1 (Soden), is a Greek uncial manuscript of New Testament, palaeographically it has been assigned to the 9th century.

[2] The text is written on 288 parchment leaves (33.8 cm by 24.2 cm), in 2 columns per page, 27 lines per page,[1] in uncial script, but separated into paragraphs by comments, written in minuscule script.

[4] In Romans 1:8 it has variant περι, along with the codices א A B C D* 33 81 1506 1739 1881, against υπερ — Dc G Ψ Byz.

The reading of the manuscript is supported by אc, Dc, P, 33, 88, 104, 181, 326, 330, (436 omit μη), 456, 614, 630, 1241, 1877, 1962, 1984, 1985, 2492, 2495, Byz, Lect.

[6] In 1 Timothy 3:16 it has textual variant θεός ἐφανερώθη (God manifested) (Sinaiticuse, A2, C2, Dc, K, L, P, Ψ, 81, 104, 181, 326, 330, 436, 451, 614, 629, 630, 1241, 1739, 1877, 1881, 1962, 1984, 1985, 2492, 2495, Byz, Lect), against ὃς ἐφανερώθη (he was manifested) supported by Sinaiticus, Codex Alexandrinus, Ephraemi, Boernerianus, 33, 365, 442, 2127, ℓ 599.