G93.1
BillableAnoxic brain damage, not elsewhere classified
HCC Category Mapping
V28HCC 202 — Coma, Brain Compression/Anoxic Damage
0.000V24HCC 80 — Coma, Brain Compression/Anoxic Damage
0.546ESRDHCC 80 — Coma, Brain Compression/Anoxic Damage
0.000What This Code Means
Brain damage resulting from lack of oxygen that is not classified elsewhere, potentially causing permanent neurological impairment.
Coding Tips
- •Document the cause of anoxia (cardiac arrest, respiratory failure, near-drowning, etc.) in the medical record
- •Use this code only when the anoxic damage cannot be classified to a more specific condition
Clinical Significance
Anoxic brain damage not elsewhere classified represents significant irreversible brain injury caused by oxygen deprivation, often following cardiac arrest, near-drowning, or severe respiratory failure. This diagnosis carries major implications for patient prognosis, functional status, and long-term care needs. It is a high-severity condition that significantly impacts resource utilization and risk adjustment.
Documentation Requirements
- ✓Clear documentation of the anoxic event (cardiac arrest, respiratory failure, near-drowning, etc.)
- ✓Neurological examination findings documenting the extent of brain damage
- ✓Imaging (CT or MRI) showing evidence of hypoxic-ischemic injury
- ✓Functional status assessment including Glasgow Coma Scale or similar scoring
- ✓Prognosis documentation and ongoing management plan (rehabilitation, long-term care needs)
Excludes 1 — Do NOT code together
Commonly Confused Codes
G93.5 — Compression of brain: mechanical compression rather than oxygen deprivationG93.6 — Cerebral edema: may coexist with anoxic damage but represents a different pathological processI97.810-I97.821 — Postprocedural cerebrovascular infarction: when anoxia occurs during a procedure with vascular mechanismP91.60 — Hypoxic ischemic encephalopathy, unspecified (neonatal): use for perinatal/neonatal anoxic brain injury
Code Hierarchy
└G93Other disorders of brain└G93.1Anoxic brain damage, not elsewhere classified
└G93.1Anoxic brain damage, not elsewhere classified