173 Other malignant neoplasm of skin (173.00-173.99) ICD-9-CM
The 173.00-173.99 block classified 173 other malignant neoplasm of skin with 40 legacy diagnosis codes. None remain valid for claim submission; each code below links to its reference page with the official ICD-10-CM replacement under the CMS General Equivalence Mappings.
Retired Code Set
ICD-9-CM stopped being valid for U.S. claims with dates of service on or after October 1, 2015, when ICD-10-CM replaced it. Use this index for historical lookups and crosswalking; for current coding, start from the ICD-10-CM codes list or the ICD-9 / ICD-10 converter.
Legacy Codes in the 173.00-173.99 Block 40 codes
None of these codes remain valid for claim submission. Each code page shows its ICD-10-CM replacement under the CMS General Equivalence Mappings.
- 173.00 Malig neopl skin lip NOS
- 173.01 Basal cell ca skin lip
- 173.02 Squamous cell ca skn lip
- 173.09 Malig neo skin lip NEC
- 173.10 Mal neo eyelid/canth NOS
- 173.11 Basal cell ca lid/canth
- 173.12 Squam cell ca lid/canth
- 173.19 Mal neo eyelid/canth NEC
- 173.20 Malig neo skin ear NOS
- 173.21 Basal cell ca skin ear
- 173.22 Squam cell ca skin ear
- 173.29 Neo skin ear/ex canl NEC
- 173.30 Mal neo skn face NEC/NOS
- 173.31 Bsl cel skn face NEC/NOS
- 173.32 Sqm cel skn face NEC/NOS
- 173.39 Mal neo skn face NEC/NOS
- 173.40 Mal neo sclp/skn nck NOS
- 173.41 Bsl cell ca scalp/skn nk
- 173.42 Sqam cell ca sclp/skn nk
- 173.49 Mal neo sclp/skn nck NEC
- 173.50 Malig neo skin trunk NOS
- 173.51 Basal cell ca skin trunk
- 173.52 Squam cell ca skin trunk
- 173.59 Malig neo skin trunk NEC
- 173.60 Mal neo skin up limb NOS
- 173.61 Basal cell ca skn up lmb
- 173.62 Squam cell ca skn up lmb
- 173.69 Malig neo skn up lmb NEC
- 173.70 Mal neo skn low limb NOS
- 173.71 Basl cell ca skn low lmb
- 173.72 Sqam cell ca skn low lmb
- 173.79 Mal neo skin low lmb NEC
- 173.80 Mal neo skn site NEC/NOS
- 173.81 Bsl cell ca skn site NEC
- 173.82 Sqm cell ca skn site NEC
- 173.89 Oth mal neo skn site NEC
- 173.90 Malig neo skin site NOS
- 173.91 Basal cell ca skin NOS
- 173.92 Squam cell ca skin NOS
- 173.99 Oth mal neo skn site NOS
Questions About This Page
Are the 173.00-173.99 codes still billable?
No. Every code in this block became invalid for U.S. claims after September 30, 2015. Each code page linked above shows the ICD-10-CM replacement CMS assigned in the General Equivalence Mappings, and the ICD-9 / ICD-10 converter translates any of them directly.
What did the 173.00-173.99 block classify?
The block classified 173 other malignant neoplasm of skin with 40 codes in the final ICD-9-CM release. It sat under Neoplasms (140–239) in the legacy hierarchy.
Related References
Source: final CMS ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.
