Short cervix in the first trimester

Currently, there is no ICD-10 code for cervical shortening in the first trimester. However, the cervix could be short in the first trimester due to prior cervical procedures, congenital malformations, previously diagnosed cervical insufficiency, etc.  In those situations, the suggested codes to use are:

 O34.591 (Maternal care for other abnormalities of gravid uterus, first trimester), or O26.891 (Other specified pregnancy related conditions, first trimester).

 For previously diagnosed or suspected cervical insufficiency, one may use:

 O34.31 (Maternal care for cervical incompetence, first trimester).

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