242 Thyrotoxicosis with or without goiter (242.00-242.91) ICD-9-CM
The 242.00-242.91 block classified 242 thyrotoxicosis with or without goiter with 14 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 242.00-242.91 Block 14 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.
- 242.00 Tox dif goiter no crisis
- 242.01 Tox dif goiter w crisis
- 242.10 Tox uninod goit no cris
- 242.11 Tox uninod goit w crisis
- 242.20 Tox multnod goit no cris
- 242.21 Tox multnod goit w cris
- 242.30 Tox nod goiter no crisis
- 242.31 Tox nod goiter w crisis
- 242.40 Thyrotox-ect nod no cris
- 242.41 Thyrotox-ect nod w cris
- 242.80 Thyrtox orig NEC no cris
- 242.81 Thyrotox orig NEC w cris
- 242.90 Thyrotox NOS no crisis
- 242.91 Thyrotox NOS w crisis
Questions About This Page
Are the 242.00-242.91 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 242.00-242.91 block classify?
The block classified 242 thyrotoxicosis with or without goiter with 14 codes in the final ICD-9-CM release. It sat under Endocrine, nutritional and metabolic diseases, and immunity disorders (240–279) 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.
