2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Diseases Of Oral Cavity, Salivary Glands, And Jaws 520-529 > Diseases Of Pulp And Periapical Tissues 522.* > 2006 ICD-9-CM Diagnosis 522.4 Acute apical periodontitis of pulpal origin View the most recent version of ICD-9-CM 522.4 522.4 is a specific code that can be used to specify a diagnosis 522.4 contains 9 index entries View the ICD-9-CM Volume 1 522.* hierarchy  Index entries containing 522.4: Infection, infected, infective (opportunistic) 136.9 alveolus, alveolar (process) (pulpal origin) 522.4 dental (pulpal origin) 522.4 focal teeth (pulpal origin) 522.4 periapical (pulpal origin) 522.4 tooth, teeth 522.4 periapical (pulpal origin) 522.4 peridental periodontal pulp 522.0 socket 526.5 Periodontitis (chronic) (complex) (compound) (simplex) apical 522.6 acute (pulpal origin) 522.4 Sepsis (generalized) 995.91 dental (pulpal origin) 522.4 Septic - see also condition teeth (pulpal origin) 522.4