H18.3 Changes of corneal membranesNon-billable header with 4 child codes.
H18.30 Unspecified corneal membrane changeH18.31 Folds and rupture in Bowman's membraneH18.32 Folds in Descemet's membraneH18.33 Rupture in Descemet's membraneH18.23 Secondary corneal edemaH18.231 Secondary corneal edema, right eyeH18.232 Secondary corneal edema, left eyeH18.233 Secondary corneal edema, bilateralH18.239 Secondary corneal edema, unspecified eyeH18.3 Changes of corneal membranes (this code)H18.30 Unspecified corneal membrane changeH18.31 Folds and rupture in Bowman's membraneH18.311 Folds and rupture in Bowman's membrane, right eyeH18.312 Folds and rupture in Bowman's membrane, left eyeH18.313 Folds and rupture in Bowman's membrane, bilateral