ICD-10-CM 2027
ICD-10 code for Undifferentiated retinoblastoma
From the official ICD-10-CM alphabetic index entry “Retinoblastoma › undifferentiated”. Page updated September 29, 2026.
About coding Undifferentiated retinoblastoma
The ICD-10-CM code for Undifferentiated retinoblastoma is C69.2 (Malignant neoplasm of retina).
Within C69 (malignant neoplasm of eye and adnexa), C69.2 is specifically for malignant neoplasm of retina. Related codes cover conjunctiva (C69.0), cornea (C69.1), choroid (C69.3), ciliary body (C69.4), lacrimal gland and duct (C69.5), orbit (C69.6), overlapping sites of eye and adnexa (C69.8) and unspecified site of eye (C69.9).
To report this condition, pick the subcode that matches the documentation: C69.20 (retina), C69.21 (retina) and C69.22 (retina).
Don't report C69.2 together with the conditions in its Excludes1 note: dark area on retina (D49.81), neoplasm of unspecified behavior of retina and choroid (D49.81) and retinal freckle (D49.81).