R40.2444: Other coma, without documented Glasgow coma scale score, or with partial score reported, 24 hours or more after hospital admission
R40.2444 is a billable, specific ICD-10-CM code for other coma, without documented glasgow coma scale score, or with partial score reported, 24 hours or more after hospital admission. It is valid for submission on a claim.
Check R40.2444 with the rest of the claim: free scrubber7th character "4": 24 hours or more after hospital admission
The following appropriate 7th character is to be added to subcategory R40.24-:
- 0
- unspecified time
- 1
- in the field [EMT or ambulance]
- 2
- at arrival to emergency department
- 3
- at hospital admission
- 4
- 24 hours or more after hospital admission
Excludes1 inherited from the categories above R40.2444
A category’s note binds every code beneath it.
Other codes that can never be billed with R40.2444
Their own Excludes1 notes name this code, so the conflict is not listed above.
- R41.82Altered mental status, unspecified
Risk adjustment
R40.2444 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 202 Coma, Brain Compression/Anoxic Damage0.543 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.
Medicare coverage
R40.2444 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56612Billing and Coding: CT of the Head
- A56645Billing and Coding: Controlled Substance Monitoring and Drugs of Abuse Testing
- A56769Billing and Coding: Somatosensory Testing
Code history
Unchanged in every release from FY2024 to FY2027.
Other codes under R40.244
- R40.2440Other coma, without documented Glasgow coma scale score, or with partial score reported, unspecified time
- R40.2441Other coma, without documented Glasgow coma scale score, or with partial score reported, in the field [EMT or ambulance]
- R40.2442Other coma, without documented Glasgow coma scale score, or with partial score reported, at arrival to emergency department
- R40.2443Other coma, without documented Glasgow coma scale score, or with partial score reported, at hospital admission