ICD-10-CM > H00-H59 > H30-H36 > H31 > H31.1 H31.1 Choroidal degeneration Non-Billable/Non-Specific Type 2 Excludes angioid streaks of macula (H35.33) Codes H31.10Unspecified choroidal degenerationH31.101Choroidal degeneration, unspecified, right eyeH31.102Choroidal degeneration, unspecified, left eyeH31.103Choroidal degeneration, unspecified, bilateralH31.109Choroidal degeneration, unspecified, unspecified eyeH31.11Age-related choroidal atrophyH31.111Age-related choroidal atrophy, right eyeH31.112Age-related choroidal atrophy, left eyeH31.113Age-related choroidal atrophy, bilateralH31.119Age-related choroidal atrophy, unspecified eyeH31.12Diffuse secondary atrophy of choroidH31.121Diffuse secondary atrophy of choroid, right eyeH31.122Diffuse secondary atrophy of choroid, left eyeH31.123Diffuse secondary atrophy of choroid, bilateralH31.129Diffuse secondary atrophy of choroid, unspecified eye