Valid for Submission
F12.921 is a billable diagnosis code used to specify a medical diagnosis of cannabis use, unspecified with intoxication delirium. The code F12.921 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.
The ICD-10-CM code F12.921 might also be used to specify conditions or terms like cannabis intoxication, cannabis intoxication delirium, cannabis-induced organic mental disorder, delirium caused by synthetic cannabinoid, disorder caused by cannabis , disorder caused by synthetic cannabinoid use, etc.
Unspecified diagnosis codes like F12.921 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
Index to Diseases and Injuries
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code F12.921 are found in the index:
- - Delirium, delirious (acute or subacute) (not alcohol- or drug-induced) (with dementia) - R41.0
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Cannabis intoxication
- Cannabis intoxication delirium
- Cannabis-induced organic mental disorder
- Delirium caused by synthetic cannabinoid
- Disorder caused by cannabis
- Disorder caused by synthetic cannabinoid use
- Psychoactive substance-induced organic delirium
Diagnostic Related Groups - MS-DRG Mapping
|MS-DRG||MS-DRG Title||MCD||Relative Weight|
|894||ALCOHOL, DRUG ABUSE OR DEPENDENCE, LEFT AMA||20||0.5475|
|895||ALCOHOL, DRUG ABUSE OR DEPENDENCE WITH REHABILITATION THERAPY||20||1.592|
|896||ALCOHOL, DRUG ABUSE OR DEPENDENCE WITHOUT REHABILITATION THERAPY WITH MCC||20||1.777|
|897||ALCOHOL, DRUG ABUSE OR DEPENDENCE WITHOUT REHABILITATION THERAPY WITHOUT MCC||20||0.8255|
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.
Convert F12.921 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code F12.921 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Information for Patients
What is delirium?
Delirium is a mental state in which you are confused, disoriented, and not able to think or remember clearly. It usually starts suddenly. It is often temporary and treatable.
There are three types of delirium:
- Hypoactive, where you are not active and seem sleepy, tired, or depressed
- Hyperactive, where you are restless or agitated
- Mixed, where you change back and forth between being hypoactive and hyperactive
What causes delirium?
There are many different problems that can cause delirium. Some of the more common causes include
- Alcohol or drugs, either from intoxication or withdrawal. This includes a serious type of alcohol withdrawal syndrome called delirium tremens. It usually happens to people who stop drinking after years of alcohol abuse.
- Dehydration and electrolyte imbalances
- Hospitalization, especially in intensive care
- Infections, such as urinary tract infections, pneumonia, and the flu
- Medicines. This could be a side effect of a medicine, such as sedatives or opioids. Or it could be withdrawal after stopping a medicine.
- Metabolic disorders
- Organ failure, such as kidney or liver failure
- Serious illnesses
- Severe pain
- Sleep deprivation
- Surgeries, including reactions to anesthesia
Who is at risk for delirium?
Certain factors put you at risk for delirium, including
- Being in a hospital or nursing home
- Having a serious illness or more than one illness
- Having an infection
- Older age
- Taking medicines that affect the mind or behavior
- Taking high doses of pain medicines, such as opioids
What are the symptoms of delirium?
The symptoms of delirium usually start suddenly, over a few hours or a few days. They often come and go. The most common symptoms include
- Changes in alertness (usually more alert in the morning, less at night)
- Changing levels of consciousness
- Disorganized thinking, talking in a way that doesn't make sense
- Disrupted sleep patterns, sleepiness
- Emotional changes: anger, agitation, depression, irritability, overexcitement
- Hallucinations and delusions
- Memory problems, especially with short-term memory
- Trouble concentrating
How is delirium diagnosed?
Your health care provider may use many tools to make a diagnosis:
- A medical history, which includes asking about your symptoms
- Physical and neurological exams
- Mental status testing
- Lab and diagnostic imaging tests
Delirium and dementia have similar symptoms, so it can be hard to tell them apart. They can also occur together. Delirium starts suddenly and can cause hallucinations. The symptoms may get better or worse and can last for hours or weeks. On the other hand, dementia develops slowly and does not cause hallucinations. The symptoms are stable and may last for months or years.
What are the treatments for delirium?
Treatment of delirium focuses on the causes and symptoms of delirium. The first step is to identify the cause. Often, treating the cause will lead to a full recovery. The recovery may take some time - weeks or sometimes even months. In the meantime, there may be treatments to manage the symptoms, such as
- Controlling the environment, which includes making sure that the room is quiet and well-lit, having clocks or calendars in view, and having family members around
- Medicines, including those that control aggression or agitation and pain relievers if there is pain
- If needed, making sure that the person has a hearing aid, glasses, or other devices for communication
Can delirium be prevented?
Treating the conditions that can cause delirium may reduce the risk of getting it. Hospitals can help lower the risk of delirium by avoiding sedatives and making sure that the room is kept quiet, calm, and well-lit. It can also help to have family members around and to have the same staff members treat the person.
[Learn More in MedlinePlus]
What is marijuana?
Marijuana is a green, brown, or gray mix of dried, crumbled parts from the marijuana plant. The plant contains chemicals which act on your brain and can change your mood or consciousness.
How do people use marijuana?
There are many different ways that people use marijuana, including
- Rolling it up and smoking it like a cigarette or cigar
- Smoking it in a pipe
- Mixing it in food and eating it
- Brewing it as a tea
- Smoking oils from the plant ("dabbing")
- Using electronic vaporizers ("vaping")
What are the effects of marijuana?
Marijuana can cause both short-term and long-term effects.
While you are high, you may experience
- Altered senses, such as seeing brighter colors
- Altered sense of time, such as minutes seeming like hours
- Changes in mood
- Problems with body movement
- Trouble with thinking, problem-solving, and memory
- Increased appetite
In the long term, marijuana can cause health problems, such as
- Problems with brain development. People who started using marijuana as teenagers may have trouble with thinking, memory, and learning.
- Coughing and breathing problems, if you smoke marijuana frequently
- Problems with child development during and after pregnancy, if a woman smokes marijuana while pregnant
Can you overdose on marijuana?
It is possible to overdose on marijuana, if you take a very high dose. Symptoms of an overdose include anxiety, panic, and a rapid heartbeat. In rare cases, an overdose can cause paranoia and hallucinations. There are no reports of people dying from using just marijuana.
Is marijuana addictive?
After using marijuana for a while, it is possible to get addicted to it. You are more likely to become addicted if you use marijuana every day or you started using it when you were a teenager. If you are addicted, you will have a strong need to take the drug. You may also need to smoke more and more of it to get the same high. When you try to quit, you may have mild withdrawal symptoms such as
- Trouble sleeping
- Decreased appetite
What is medical marijuana?
The marijuana plant has chemicals that can help with some health problems. More states are making it legal to use the plant as medicine for certain medical conditions. But there isn't enough research to show that the whole plant works to treat or cure these conditions. The U.S. Food and Drug Administration (FDA) has not approved the marijuana plant as a medicine. Marijuana is still illegal at the national level.
However, there have been scientific studies of cannabinoids, the chemicals in marijuana. The two main cannabinoids that are of medical interest are THC and CBD. The FDA has approved two drugs that contain THC. These drugs treat nausea caused by chemotherapy and increase appetite in patients who have severe weight loss from AIDS. There is also a liquid drug that contains CBD. It treats two forms of severe childhood epilepsy. Scientists are doing more research with marijuana and its ingredients to treat many diseases and conditions.
NIH: National Institute on Drug Abuse
[Learn More in MedlinePlus]