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  2. ICD-10-CM Codes List
  3. G00–G99
  4. G00-G09
  5. Sequelae of inflammatory diseases of central nervous system (G09)

Sequelae of inflammatory diseases of central nervous system (G09)

ICD-10 code G09 is used to identify the long-term effects that occur after inflammatory diseases of the central nervous system, such as meningitis or intracranial abscesses. This code captures the ongoing health issues that may develop once the initial infection has cleared.

This code covers a range of conditions including sequelae like hydrocephalus following infectious disease, postinfectious hydrocephalus, and secondary tic disorders that arise after encephalitic syndromes. Common synonyms such as "late effects of pyogenic intracranial abscess," "obstructive hydrocephalus due to meningitis," and "sequela of infectious meningitis" all correspond to G09. Understanding these terms helps medical coders accurately use the ICD-10 code for sequelae of inflammatory diseases of the central nervous system, ensuring precise documentation of complications that persist after infections resolve. This coding is essential for capturing the full medical impact of central nervous system infections beyond the acute phase.

Instructional Notations

Code First

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

  • condition resulting from (sequela) of inflammatory diseases of central nervous system

  • Category G09 is to be used to indicate conditions whose primary classification is to G00 G08