A radicular cyst is generally defined as a cyst arising from epithelial residues (cell rests of Malassez) in the periodontal ligament as a consequence of inflammation, usually following the death of the dental pulp.
CLINICAL CHARACTERISTICS. Periapical or radicular cyst is the most common cyst of the jaws. It is considered an inflammatory rather than a developmental odontogenic cyst. This cyst is always associated with a nonvital tooth.
Periapical cysts, also known as radicular cysts, are the most frequent cystic lesion related to teeth (see mandibular lesions) and result from infection of the tooth. On imaging, they generally appear as a round- or pear-shaped, unilocular, lucent lesion in the periapical region, usually measuring <1 cm.
Odontogenic cysts are epithelial-lined pathologic cavities and surrounded by fibrous connective tissue that originate from odontogenic tissues that occur in tooth-bearing regions of maxilla and mandible. Cystic conditions of the jaw cause bony destruction and may cause resorption or displacement of adjacent teeth.
Radicular cysts generally originate after trauma or dental caries. Dental caries cause inflammation of the pulp cavity, leading to pulp necrosis [8]. The infection then spreads to the tooth apex of the root, causing periapical periodontitis, which leads to either an acute abscess or a chronic granuloma.
Odontogenic cysts arise from remnants of the odontogenic epithelium entrapped in bone or gingival tissue, while non-odontogenic cysts develop from epithelium of non-odontogenic origin.
Radicular cysts are diagnosed either during routine radiographic examination or following their acute exacerbation. Prevalence of the radicular cysts in the maxilla is 60% as compared with mandible, and is associated with buccal or palatal enlargement.
The death or necrosis of the pulp tissue inside the tooth, which stems from tooth decay or trauma will cause this type of cyst. The process of pulpal necrosis causes inflammation and the release of toxins at the apex or end of the root tip. Commonly treated by endodontic therapy.
Apical periodontal cysts are benign lesions developing in relation to the apices of non-vital teeth due to inflammatory response from the infective pulp. These are epithelium-lined bony cavities containing fluid.
A periapical (radicular) cyst is the most common odontogenic cyst. The usual etiology is a tooth that becomes infected, leading to necrosis of the pulp. Toxins exit the apex of the tooth, leading to periapical inflammation.
An odontogenic cyst is a fluid-filled sac that develops in the jaw bone over a tooth that hasn't erupted yet. The cysts, in most cases, affect the molars or canines, and they're second in prevalence after periapical cysts. These are cystic lesions that result from an infection in a tooth.
Calcified cystic odontogenic tumor is now classified as a 'calcifying odontogenic cyst;' and keratocystic odontogenic tumor is now listed as 'odontogenic keratocyst (OKC)' in the 2017 classification of developmental odontogenic cysts.
K04.8 is a valid billable ICD-10 diagnosis code for Radicular cyst . It is found in the 2021 version of the ICD-10 Clinical Modification (CM) and can be used in all HIPAA-covered transactions from Oct 01, 2020 - Sep 30, 2021 .
DO NOT include the decimal point when electronically filing claims as it may be rejected. Some clearinghouses may remove it for you but to avoid having a rejected claim due to an invalid ICD-10 code, do not include the decimal point when submitting claims electronically. See also:
Cysts of oral region, not elsewhere classified 1 K09 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail. 2 The 2021 edition of ICD-10-CM K09 became effective on October 1, 2020. 3 This is the American ICD-10-CM version of K09 - other international versions of ICD-10 K09 may differ.
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code ( K09) and the excluded code together.
The 2022 edition of ICD-10-CM K09 became effective on October 1, 2021.
Cysts of oral region, not elsewhere classified. K09 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail. The 2021 edition of ICD-10-CM K09 became effective on October 1, 2020.