CADC, LADC, LCDC and CAC are not four rungs of one national ladder.
There is no national addiction-counselor credential: the letters come from different issuers — state boards, state agencies, and private certifying organisations — and the same letters can mean a supervised entry certificate in one state and an independent master's-level licence in another.
To decode any of them, identify who issued the credential first, and which tier of that issuer's ladder it sits at second.
The letters themselves will mislead you.
Why the maze exists: there is no national credential
Start with the fact that explains everything else: no federal licence or certification exists for substance use disorder counseling.
Each of the 51 jurisdictions answers the credentialing question in its own way, and the 2026 verification of all 51 found three answers.
Thirty-three issue a state SUD-counselor licence at one or more tiers — Texas, Ohio, Louisiana, and a list that now includes West Virginia, whose first SUD-counselor law took effect in June 2026.
Six issue a state certificate or credential with no licence: the District of Columbia, Hawaii, New York, Washington, Wisconsin, and Mississippi.
Twelve have no state credential at all — private certification only, from Alabama and California to Michigan, Oregon, and Pennsylvania.
That split comes with a counting rule, and the rule matters more than the numbers.
A state sits in the licence column if any of its SUD-counselor tiers is a state licence — so mixed systems like Rhode Island, where a private certification is the prerequisite to the state licence, count as licence states.
Quote the 33/6/12 split only with that definition attached, because a different counting rule produces different numbers.
And "licence" versus "certification" does not track legal force.
Michigan's CADC is a private certification, yet the state's publicly funded treatment network must be staffed with credentialed counselors under a state health-department funding policy.
Oregon's CADC is likewise a private certification made mandatory by state program rule.
Delaware's licence, by contrast, is title protection only — the statute stops you calling yourself a licensed chemical dependency professional, not working as a counselor.
The role overview surveys all three systems and the settings that make each one mandatory.
CADC: one acronym, at least a dozen issuers
CADC — certified alcohol and drug counselor — is the field's most traveled acronym, and it does not name one thing.
In Connecticut, New Jersey, North Carolina, Nevada, and Oklahoma the CADC is a state-issued certificate.
In Illinois, Iowa, Michigan, Missouri, Pennsylvania, and Georgia it is a private certification from the state's IC&RC member board.
Nothing in the letters tells you which you are looking at, and the difference is practical: a state certificate is issued under state administrative rules, while a private certification lives or dies by the program rules and funding policies that reference it.
Oregon shows how far the same four letters can stretch.
Its CADC is a private certification running a three-step ladder — CADC I (150 education hours and 1,000 supervised experience hours, with no associate degree required), CADC II (a bachelor's degree, or an AA degree or 90 college credits as its equivalency, and 4,000 hours), CADC III (a master's and 6,000 hours, examined with the Master Addiction Counselor exam).
Staff at state-certified treatment programs must register within 30 days of employment and reach full certification within two years.
And Oregon's CADC carries no IC&RC reciprocity at all — the state's board is on the IC&RC directory only for other credentials.
The trap to avoid is the confident summary sentence.
"Pennsylvania requires a CADC" is wrong: Pennsylvania's regulations name certification by the Pennsylvania Certification Board as one of six alternatives a program may accept.
The letters never carry the requirement — the issuer and the program rule do, which is why the issuer is the first thing to identify, not the acronym.
LADC: the licensed tier, with different degree floors
When the C becomes an L, the credential is usually a licence — but the tier underneath varies enormously.
In Nevada, the LADC is the master's-or-doctorate licence; the bachelor's tier is the certified alcohol and drug counselor, and the statutory title contains no "Abuse," whatever older web pages say.
In Connecticut, the LADC is a master's-level licence requiring at least 18 graduate semester hours in counseling, sitting above the CADC certificate.
In New Hampshire, the LADC starts at an associate degree in substance use counseling with 6,000 supervised hours (4,000 with a bachelor's) — and a New Hampshire LADC may not practise independently; even the master's-level MLADC above it requires clinical supervision or peer collaboration for independent practice.
Scope moves with the tier, state by state.
Nevada's LADC may "diagnose or classify" a substance use disorder but may not diagnose or treat mental illness when a client has both — co-occurring disorder work belongs to the Licensed Clinical alcohol and drug counselor above it.
Connecticut writes "screening, assessment and diagnosis" into the LADC's scope while restricting its CADC to private practice only under an LADC's supervision.
Same broad shape of work; different legal authority, decided by each state's statute.
The map is still growing.
West Virginia enacted its first SUD-counselor law in 2026 — effective 12 June 2026 — creating both a certified and a licensed alcohol and drug counselor, the licensed tier requiring a master's with at least 18 graduate semester hours in counseling.
The state Bureau for Behavioral Health need not be administering the program until 1 July 2027, and holders of the existing private credential are grandfathered to that date.
LCDC: Texas's single licence and Ohio's three-tier ladder
Texas issues exactly one SUD-counselor licence: the LCDC — Licensed Chemical Dependency Counselor.
It takes an associate degree or higher, 4,000 hours of approved supervised experience, and a state exam, and Texas practice law is blunt: a person may not engage in the practice of chemical dependency counseling unless licensed as an LCDC.
The licence's administrative rules moved to a new chapter of the Texas Administrative Code effective 31 January 2025 — one more reason to check the current citation rather than an older article's.
Ohio uses the same three letters as a ladder of three licences.
The LCDC II takes an associate degree in a behavioral science or nursing — or any bachelor's degree — plus 180 hours of SUD education, and may not practise as an individual practitioner.
The LCDC III requires the bachelor's to be in a behavioral science or nursing, and may diagnose substance use disorders only under supervision.
The LICDC — licensed independent chemical dependency counselor — requires a master's, and it is the only tier that diagnoses and practises on its own authority.
Since July 2023 all three tiers sit on a 2,000-hour supervised experience requirement.
So "LCDC" reliably tells you the state and almost nothing else until you know which ladder is meant — Texas's one-rung licence or Ohio's three.
Ohio renamed the practice itself "substance use disorder counseling" in 2025, though its licence titles still read "chemical dependency" — a good example of why credential names outlive the vocabulary around them.
CAC and LAC: the same 'A', different systems
CAC spans at least four different systems.
In the District of Columbia, CAC I and CAC II are state certifications — associate's and bachelor's degree tiers respectively — and both may practise only under supervision; neither is an independent credential.
In Louisiana, the CAC is the middle rung of a three-tier ladder: a bachelor's degree and 4,000 hours, with no independent practice and no diagnostic impression allowed.
In Florida it is a private certification from the Florida Certification Board, recognized by the state's substance-use agency — and Florida CAC holders automatically earn the corresponding IC&RC credential.
In South Dakota it is a state certification with a high-school entry floor and work-experience hours that step down from 8,000 to 2,000 as degree rises.
In Colorado, the CAC I/II/III tiers no longer exist — the old CAC III closed in 2020 — though the current certificate holders may still use the title "certified addiction counselor."
LAC is the top of several ladders and the middle of others.
Louisiana's LAC is the master's tier — 2,000 hours, and the only tier that may practise autonomously.
Colorado's LAC is its top addiction-counselor licence, requiring a master's or doctoral degree and the Master Addiction Counselor examination.
South Dakota's LAC is the master's-level licence, with two further years of qualifying experience before private independent practice.
But in Indiana, Kansas, and North Dakota the LAC is a bachelor's-tier credential, and Montana's LAC — its only full licence — accepts an associate degree.
The sharpest same-letters trap in the field is LAT.
Wyoming's LAT is the Licensed Addictions Therapist: master's-level, independent, with diagnosis in the scope of practice.
Arizona's LAT is the Licensed Addiction Technician: the entry tier of Arizona's ladder, associate- or bachelor's-level, practising only under direct supervision.
Opposite ends of two different ladders — and Arizona retitled its whole ladder in 2024, so articles naming its older licence abbreviations are out of date.
The tier system underneath the letters
Most of these state systems are built on the framework of the International Certification & Reciprocity Consortium (IC&RC) — which, importantly, does not certify individuals.
Its member boards do, each setting its own standards above the IC&RC minimums.
The entry-level floor — the Alcohol and Drug Counselor (ADC) level — is a high school diploma, 300 hours of education including six in ethics, and supervised experience that steps down by degree: 6,000 hours with a high school diploma, 5,000 with an associate, 4,000 with a bachelor's, 2,000 with a master's, matched by 300/250/200/100 hours of supervision.
A 150-question exam and 40 continuing-education hours every two years complete the floor.
These are floors for member boards to exceed — never any state's actual requirement.
The advanced tier (AADC) requires a master's degree, 2,000 supervised hours, and 100 supervision hours.
Alongside the IC&RC sits NAADAC, whose voluntary national certifications — NCAC I, NCAC II, and MAC — are explicitly layered on top of a current state credential: each requires you to hold one first, and associate, provisional, intern, or trainee credentials are not accepted.
How the two organisations' exams and credentials relate, and what carries between them, is its own subject with a direct bearing on moving between states.
What transfers when you move — and what the letters mean for billing
Portability runs through the frameworks, not the letters.
IC&RC reciprocity works only between its own member boards, and only for the same credential at a reciprocal level: the receiving board may add its own requirements, the jurisdiction you move to decides what you receive — a licence where it licences, a certification where it certifies, regardless of what you held before — and the credential must be current and valid when you apply.
There is no reciprocity agreement between IC&RC credentials and NAADAC's national certifications.
So the honest planning assumption is the one the letters suggest: the CADC you hold is a credential of a specific issuer, and a move means presenting it to a new issuer with its own rules.
The payer consequences are sharper than the portability ones.
Medicare enrols addiction counselors only as mental health counselors: under the rule in force since 1 January 2024, that takes a qualifying master's or doctorate, two years or 3,000 hours of post-master's supervised clinical experience, and state licensure or certification as a counselor.
CMS's own rule commentary notes that some states certify addiction counselors with a bachelor's degree, but "these individuals would not meet the education requirements."
A high-school-, associate-, or bachelor's-level credential cannot enrol, whatever its letters say; Medicaid is a separate, state-by-state question.
The mechanics behind that gate — and why credential tier tracks pay — are the same ones covered in can an associate bill insurance?
The wage tables cannot see any of the letters either.
The federal data has no SUD-counselor-only occupation: SOC 21-1018 pools substance abuse, behavioral disorder, and mental health counselors into one combined distribution, so no honest per-credential salary figure exists — the salary page for the combined table shows what the data does and does not separate.
How to read any of these credentials
Three questions, in this order.
First, who issued it — a state licensing board, a state agency or department, or a private certifying organisation?
That single fact tells you whether you are holding a licence, a state certificate, or a private certification, and which rules can make it mandatory.
Second, which tier of that issuer's ladder is it — because Ohio's LCDC II and LICDC are different credentials with different authority, and Wyoming's LAT and Arizona's LAT are not remotely the same job.
Third, what does the state's statute say about diagnosis and independent practice — because exam content confers nothing; only the statute and rules decide scope.
Re-verify rather than memorise, because this map is younger than most careers.
West Virginia's new licence is not administered until mid-2027.
Arizona retitled its ladder in 2024, Mississippi renamed its top credential effective July 2026, Ohio renamed the practice in 2025, the District of Columbia repealed its Advanced Practice Addiction Counselor credential in 2024, and Utah added new licence tiers in 2024 with a rewritten supervised-hour rule effective July 2026.
Any article — including this one — is a snapshot against issuing bodies that keep moving.
When you are ready to see how employers phrase the tiers in real postings, browse open substance abuse counselor roles — and for the full picture of the role behind the credentials, start with what a substance abuse counselor does.
This article is general career information, not legal, clinical, or medical advice, and it is not guidance for anyone seeking treatment. Credential requirements and scope of practice are set by state boards, state agencies, and certifying organisations, and all of them change — confirm the current position with the issuing body in your state before relying on any of it. If you are in crisis, the 988 Suicide & Crisis Lifeline can be reached by call or text.
Three things to verify with the issuer, not with an article

