Diagnosis Code 478.21
Information for Medical Professionals
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
- J39.1 - Other abscess of pharynx (approximate) Approximate Flag
The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
- Cellulitis of nasopharynx
- Cellulitis of parapharyngeal space
- Cellulitis of pharynx
Index of Diseases and Injuries
References found for the code 478.21 in the Index of Diseases and Injuries:
- Cellulitis (diffuse) (with lymphangitis) (SEE ALSO See Also
A “see also” instruction following a main term in the index instructs that there is another main term that may also be referenced that may provide additional index entries that may be useful. It is not necessary to follow the “see also” note when the original main term provides the necessary code. Abscess) 682.9
- nasopharynx 478.21
- pharynx 478.21
Information for Patients
Cellulitis is an infection of the skin and deep underlying tissues. Group A strep (streptococcal) bacteria are the most common cause. The bacteria enter your body when you get an injury such as a bruise, burn, surgical cut, or wound.
- Fever and chills
- Swollen glands or lymph nodes
- A rash with painful, red, tender skin. The skin may blister and scab over.
Your health care provider may take a sample or culture from your skin or do a blood test to identify the bacteria causing infection. Treatment is with antibiotics. They may be oral in mild cases, or intravenous (through the vein) for more severe cases.
NIH: National Institute of Allergy and Infectious Diseases
- Orbital cellulitis
- Perianal streptococcal cellulitis
- Periorbital cellulitis