D03.20 Melanoma in situ of unspecified ear and external auricular canal

Billable ICD-10-CM code, FY2026.

Risk adjustment (HCC)

• CMS-HCC V28: HCC 23 — Prostate, Breast, and Other Cancers and Tumors
• CMS-HCC V22: HCC 12 — Breast, Prostate, and Other Cancers and Tumors
• RxHCC V08: HCC 22 — Prostate, Breast, Bladder, and Other Cancers and Tumors
• ESRD V24: HCC 12

MS-DRG index

Defines the logic of DRG(s) 595-596 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 172.2 Malignant melanoma of skin of ear and external auditory canal (approximate)

Code annotations containing back-references to D03.20

Back-references to D03

• Type 1 Excludes: C43 Malignant melanoma of skin ("melanoma in situ (D03.-)")
• Type 1 Excludes: D00 Carcinoma in situ of oral cavity, esophagus and stomach ("melanoma in situ (D03.-)")
• Type 1 Excludes: D01 Carcinoma in situ of other and unspecified digestive organs ("melanoma in situ (D03.-)")
• Type 1 Excludes: D02 Carcinoma in situ of middle ear and respiratory system ("melanoma in situ (D03.-)")
• Type 1 Excludes: D04 Carcinoma in situ of skin ("melanoma in situ (D03.-)")
• Type 1 Excludes: D09 Carcinoma in situ of other and unspecified sites ("melanoma in situ (D03.-)")

Nearby codes

• D03.112 Melanoma in situ of right lower eyelid, including canthus
• D03.12 Melanoma in situ of left eyelid, including canthus
• D03.121 Melanoma in situ of left upper eyelid, including canthus
• D03.122 Melanoma in situ of left lower eyelid, including canthus
• D03.2 Melanoma in situ of ear and external auricular canal
• D03.20 Melanoma in situ of unspecified ear and external auricular canal (this code)
• D03.21 Melanoma in situ of right ear and external auricular canal
• D03.22 Melanoma in situ of left ear and external auricular canal
• D03.3 Melanoma in situ of other and unspecified parts of face
• D03.30 Melanoma in situ of unspecified part of face
• D03.39 Melanoma in situ of other parts of face