542Other appendicitis
- Legacy / Not Valid for Submission
- Replaced October 1, 2015
542 is a legacy ICD-9-CM diagnosis code for other appendicitis. It was valid on U.S. claims through September 30, 2015 and cannot be reported for services on or after October 1, 2015, when ICD-10-CM replaced the ICD-9 code set. Under the CMS General Equivalence Mappings, its ICD-10-CM replacement is K36 (Other appendicitis), flagged as a direct match.
Code Identity
Convert 542 to ICD-10-CM
Based on the final CMS General Equivalence Mappings (GEMs), 542 crosswalks to the following ICD-10-CM code.
Approximate Synonyms
Alternate clinical terms that were indexed to 542:
- Appendicitis of a pelvic appendix
- Atypical appendicitis
- Catarrhal appendicitis
- Chronic appendicitis
- Healed appendicitis
- Recurrent appendicitis
- Relapsing appendicitis
- Retrocecal appendicitis
- Retroileal appendicitis
- Subacute appendicitis
Index of Diseases References
Entries in the final ICD-9-CM Index to Diseases and Injuries that point to 542. Tap the icons for the official index conventions.
- Appendicitis 541
- chronic recurrent 542
- healed obliterative 542
- interval 542
- neurogenic 542
- obstructive 542
- recurrent 542
- relapsing 542
- subacute adhesive 542
- subsiding 542
- Disease diseased SEE ALSO Syndrome
- Paget s disease osteitis deformans 731.0
- malignant M8540 3
- specified site NEC M8542 3 see Neoplasm skin malignant
- malignant M8540 3
- Subsiding appendicitis 542
Information for Patients
Appendicitis
The appendix is a small, tube-like organ attached to the first part of the large intestine. It is located in the lower right part of the abdomen. It has no known function. A blockage inside of the appendix causes appendicitis. The blockage leads to increased pressure, problems with blood flow, and inflammation.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Questions About 542
Is 542 (other appendicitis) still a valid code?
No. This code belonged to ICD-9-CM, which the United States retired after September 30, 2015. Claims with dates of service on or after October 1, 2015 must use ICD-10-CM codes, such as its replacement K36.
What is the ICD-10 replacement for 542?
The General Equivalence Mappings crosswalk this code directly to ICD-10-CM K36 (Other appendicitis), a one-to-one match.
What did 542 mean?
In the final ICD-9-CM release, this code described other appendicitis. It sat in block 542 Other appendicitis under Diseases of the digestive system (520–579).
