Convert to ICD-10-CM: 
362.21 converts approximately to:
- 2015/16 ICD-10-CM H35.179 Retrolental fibroplasia, unspecified eye
 ICD-9-CM Volume 2 Index entries containing back-references to 
362.21:
- Dysplasia - see also Anomaly retrolental (see also Retinopathy of prematurity) 362.21 retrolental (see also Retinopathy of prematurity) 362.21
 
- Fibroplasia, retrolental (see also Retinopathy of prematurity) 362.21
- Retinopathy (background) 362.10 
- Syndrome - see also Disease Terry's (see also Retinopathy of prematurity) 362.21 Terry's (see also Retinopathy of prematurity) 362.21
 
- Terry's syndrome (see also Retinopathy of prematurity) 362.21