F12.91
Cannabis use, unspecified, in remission
F12.91 (also written F1291) is a billable ICD-10-CM diagnosis code for cannabis use, unspecified, in remission. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 39 codes in category F12 (Cannabis related disorders). The Alphabetic Index lists it under 1 entry. Its coding notes include 2 Excludes1 entries and 1 Excludes2 entry.
Guidelines tips
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
When use, abuse and dependence of the same substance are all documented, one code is assigned, by a set hierarchy.
A medical condition due to substance use is coded from the Alphabetic Index along with the substance use, abuse or dependence code, not as a substance-induced disorder.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
IPF Primary
IPF MS-DRG adjustment. A principal diagnosis of this code groups to one of these MS-DRGs. Which one depends on other facts of the stay, so the factor is a range:
| MS-DRG | Description | Factor |
|---|---|---|
| 894 | Alcohol/drug abuse or dependence, left AMA | 0.86 |
| 895 | Alcohol/drug abuse or dependence w rehabilitation therapy | 0.90 |
| 896 | Alcohol/drug abuse or dependence w/o rehabilitation therapy w MCC | 1.00 |
| 897 | Alcohol/drug abuse or dependence w/o rehabilitation therapy w/o MCC | 0.95 |
Includes
Further defines or gives examples of the content of the category.
- marijuana
Also from chapter/block level (1 note)
- disorders of psychological development
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 1 entry