Stimulant use disorder ICD-10: F14 versus F15

In this article▾

1. What is the stimulant use disorder ICD-10 code?
2. Why is cocaine separated from other stimulants?
3. What is an Excludes1 note, and why does it matter?
4. How do you code a patient using meth and cocaine?
5. Does prescription stimulant misuse code the same way?
6. What makes stimulant claims deny?
7. How do you code stimulant-induced psychosis?
8. How does the stimulant code connect to your level of care?
9. How the substance-to-category match can be automated
10. FAQ

TL;DR: Stimulant use disorder ICD-10 coding splits across two categories that most people treat as one. Cocaine belongs to F14. Methamphetamine, amphetamines, MDMA, and caffeine belong to F15. A hard exclusion sits between them, and a patient using both substances needs a code from each.

Key takeaways

• What is the stimulant use disorder ICD-10 code?
• Why cocaine is separated from other stimulants (F14 vs. F15)
• What an Excludes1 note means and why it matters
• How to code a patient using meth and cocaine
• Does prescription stimulant misuse code the same way?
• What makes stimulant claims deny

Stimulant admissions have climbed at treatment centers across the country, and the coding for them is split in a way the clinical vocabulary does not reflect. Staff say stimulants. The code set says cocaine over here, everything else over there.

That mismatch produces two errors, both routine. Methamphetamine gets coded to F14 because someone thought stimulant meant cocaine, or a patient using both gets one code when they need two.

What is the stimulant use disorder ICD-10 code?

It depends which stimulant. F14 covers cocaine-related disorders, and F15 covers other stimulant-related disorders. Within each, the familiar pattern applies: .1 for abuse, .2 for dependence, and .9 for unspecified use.

The word "other" in F15 is doing a lot of quiet work. It reads like a residual category and it is actually where methamphetamine sits, which makes it the busier of the two at most facilities.

Why is cocaine separated from other stimulants?

The code set treats cocaine as its own pharmacological class. Amphetamine, methamphetamine, MDMA, and caffeine fall under F15.20, while cocaine is explicitly excluded and coded under F14 instead (Pabau).

Caffeine belongs to that list too, which reliably surprises people. Caffeine use disorder is codeable in F15, and you will almost never bill it, but knowing it lives there explains why the category is titled the way it is.

Nicotine is excluded from both, sitting in F17 with its own rules (Pabau). So a patient using methamphetamine, cocaine, and cigarettes touches three separate categories.

What is an Excludes1 note, and why does it matter?

It is a hard prohibition. An Excludes1 note means the two conditions cannot be coded together, as opposed to an Excludes2 note, which allows both when the patient genuinely has each.

Excludes1 versus Excludes2. Excludes1 means never code these together for the same condition. Excludes2 means the excluded condition is separate and may be coded alongside when documented.

The Excludes1 note at the F15 category level is a hard exclusion rather than a guidance note, so cocaine-related disorders cannot be coded with F15 codes for the same condition (Pabau).

In practice this means you cannot use F15 as a catch-all that quietly includes the cocaine. If cocaine is part of the picture, it needs its own F14 code.

How do you code a patient using meth and cocaine?

Two codes, one from each category. A patient presenting with both cocaine and amphetamine dependence takes F14.20 for the cocaine component and F15.20 for the amphetamine component (Pabau).

The hierarchy rule still applies inside each category. If the chart documents both abuse and dependence of methamphetamine, only the dependence code goes on the claim (American Medical Coding). One code per substance category, at the highest severity documented.

This is also where the F19 temptation shows up. A patient using two stimulants is not a polysubstance case in the coding sense, because both substances are identified and both have categories. Code them.

Does prescription stimulant misuse code the same way?

When a disorder is documented, yes. Misuse of prescribed amphetamine or methylphenidate that meets abuse or dependence criteria codes to F15, the same as illicit methamphetamine.

The distinction to hold onto is between a disorder and an adverse effect. A patient taking a stimulant as prescribed who experiences a side effect is not a substance use disorder case, and coding one creates a chart that misrepresents the patient.

This comes up in ADHD populations, where a stimulant prescription and a stimulant use disorder can genuinely coexist. Both facts belong in the record, and only the documented disorder belongs in F15.

What makes stimulant claims deny?

Category errors and thin withdrawal documentation, mostly. Insurers denied 19% of in-network marketplace claims in 2024, with rates from 3% to 36% across insurers (KFF).

That last row is a specific hazard for stimulant admissions. Utilization review approved a stay discussed as methamphetamine dependence, and the claim went out on F14.20 because someone equated stimulant with cocaine. The service happened and the claim describes a different patient.

Stimulant withdrawal deserves its own attention. It presents as crash, hypersomnia, and profound low mood rather than as anything a vital-sign chart captures, so it gets treated attentively and documented barely. F14.23 and F15.23 exist and are underused.

Fewer than 1% of denied claims were appealed in 2024, and 66% of the appeals filed were upheld in the insurer's favor (KFF). Catching a category error before submission is the only economical version of this fix.

How do you code stimulant-induced psychosis?

With the F14.15 and F14.25 series for cocaine, and F15.15 and F15.25 for other stimulants. F15.150 is other stimulant abuse with stimulant-induced psychotic disorder with delusions, F15.151 covers hallucinations, and F15.159 is unspecified. Dependence takes F15.250, F15.251, and F15.259.

Methamphetamine-induced psychosis is among the most resource-intensive presentations a treatment facility manages, and it is routinely coded as plain dependence. That gap costs money on every claim for the stay.

The clinical picture is usually unmistakable, which makes the coding gap frustrating rather than difficult. Staff manage the psychosis, document it thoroughly in progress notes, and the diagnosis list still reads F15.20.

As with the other induced conditions, the causal determination belongs to the provider. A patient with schizophrenia who also uses methamphetamine is a different chart from a patient whose psychotic symptoms resolve as the stimulant clears.

How does the stimulant code connect to your level of care?

Through acuity, the same as everywhere else in the block, and stimulant admissions carry a specific disadvantage here. Alcohol and opioid withdrawal produce measurable physiological signs. Stimulant withdrawal produces exhaustion and severe low mood, which no vital-sign chart captures.

That puts more weight on the diagnosis code and the narrative than in an alcohol admission. When a reviewer questions why a methamphetamine-dependent patient needed 24-hour care, the answer has to be in the record rather than in the flowsheet.

The codes that help are the withdrawal and induced-condition digits. F15.23 for dependence with withdrawal, and the psychotic disorder codes when they apply, describe acuity in a way F15.20 cannot.

Suicidality deserves a specific note. Stimulant withdrawal carries meaningful suicide risk, and where that risk is assessed and documented it belongs in the record as its own coded concern rather than being folded into the substance diagnosis.

How the substance-to-category match can be automated

Nobody at your facility is confused about what the patient used. The confusion happens in the translation from a substance name in a note to a category on a claim, and it happens under time pressure.

Supa runs as an ambient layer inside the systems your team already works in. When the assessment names methamphetamine and the claim carries a cocaine code, that mismatch surfaces before submission. Supabill checks the billed diagnosis against the authorized one, flags claims where a second identified substance never got its own code, and catches withdrawal documented in a progress note that never reached the diagnosis.

Clinical judgment stays with clinicians. The category lookup does not need to.

If your stimulant admissions have grown and your denial rate moved with them, the F14 and F15 split is a good first place to look. Book a demo and we will check yours.

FAQ

Q: What is the ICD-10 code for stimulant use disorder?

A: It depends on the substance. Cocaine uses F14, so cocaine dependence uncomplicated is F14.20. Methamphetamine, amphetamines, MDMA, and caffeine use F15, so other stimulant dependence uncomplicated is F15.20.

Q: What is the ICD-10 code for methamphetamine use disorder?

A: F15, not F14. Methamphetamine dependence uncomplicated is F15.20 and methamphetamine abuse uncomplicated is F15.10. Coding methamphetamine to the cocaine category is one of the most common category errors in this part of the block.

Q: Can I code F14 and F15 on the same claim?

A: Yes, when the patient uses substances from both categories. The Excludes1 note prevents coding cocaine as an other stimulant, and it does not prevent reporting a cocaine code and a separate stimulant code for a patient genuinely using both.

Q: Where does caffeine use disorder code?

A: F15, alongside the other non-cocaine stimulants. It is codeable and rarely billed, and knowing it belongs there helps explain why the category covers a wider range of substances than its name suggests.

Q: How do I code stimulant withdrawal?

A: F14.23 for cocaine dependence with withdrawal and F15.23 for other stimulant dependence with withdrawal. Both need a provider assessment naming the withdrawal, since the presentation is behavioral and does not leave the trail in vitals that alcohol or opioid withdrawal does.

Q: Does misusing a prescribed stimulant code to F15?

A: When a clinician documents abuse or dependence, yes. A side effect from a medication taken as prescribed is a different situation and should not be coded as a substance use disorder, even though the drug involved is the same.