H21.55 Recession of chamber angleNon-billable header with 4 child codes.
H21.551 Recession of chamber angle, right eyeH21.552 Recession of chamber angle, left eyeH21.553 Recession of chamber angle, bilateralH21.559 Recession of chamber angle, unspecified eyeH21.54 Posterior synechiae (iris)H21.541 Posterior synechiae (iris), right eyeH21.542 Posterior synechiae (iris), left eyeH21.543 Posterior synechiae (iris), bilateralH21.549 Posterior synechiae (iris), unspecified eyeH21.55 Recession of chamber angle (this code)H21.551 Recession of chamber angle, right eyeH21.552 Recession of chamber angle, left eyeH21.553 Recession of chamber angle, bilateralH21.559 Recession of chamber angle, unspecified eyeH21.56 Pupillary abnormalities