G93.5 vs S06-
G93.5 and S06 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.
Compression of brain
- Chapter 6
- Diseases of the nervous system
- Section
- G89-G99
- Arnold-Chiari type 1 compression of brain
- Compression of brain (stem)
- Herniation of brain (stem)
- Midline shift of brain
- Compression › brain (stem)
- Hernia, hernial › foramen magnum
- Herniation › brain (stem)
- Herniation › cerebral
- Pressure › brain
Intracranial injury
- Chapter 19
- Injury, poisoning and certain other consequences of external causes
- Section
- S00-S09
- traumatic brain injury
These two codes sit in different chapters of the Tabular List, which is usually the clearest signal that they describe different underlying processes rather than different degrees of the same one.
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027