Summary & Overview

HCPCS Level II M1020: Adolescent Depression 12-Month Non-Remission

HCPCS Level II code M1020 documents adolescent patients aged 12–17 with major depression or dysthymia who have not reached remission at the twelve-month follow-up. Remission is defined by a PHQ-9 or PHQ-9M score of less than 5 at twelve months (±60 days); this code applies when the twelve-month score is missing or is ≥5. The code captures longitudinal clinical status rather than a discrete procedure and is used to track treatment outcomes and quality measurement for pediatric behavioral health.

Key payers covered in typical analyses include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find context on the clinical criteria underlying the code, expected service settings (behavioral health and outpatient mental health), and the role of standardized depression measures in quality reporting. The publication summarizes benchmarking implications for national payer programs, clarifies the code’s measurement focus, and outlines what data elements are necessary to support accurate billing.

The material is intended for clinicians, billing professionals, quality officers, and policy analysts seeking a concise description of M1020, its clinical relevance, and how it fits into adolescent depression follow-up and quality measurement efforts. Data not available in the input: specific associated taxonomies, ICD-10 diagnoses, related codes, and service line detail.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareM1020HCPCS Level IIadolescent depressionPHQ-9quality measurementbehavioral healthoutpatient mental health

Billing Code Overview

HCPCS Level II code M1020 indicates adolescent patients ages 12 to 17 with major depression or dysthymia who did not achieve remission at twelve months. Remission status is defined by a twelve month (+/-60 days) PHQ-9 or PHQ-9M score of less than 5; the code applies when either the PHQ-9 or PHQ-9M score was not assessed or is greater than or equal to 5 at the twelve-month interval.

Service type: Measurement and assessment of clinical remission status for adolescent depression at a twelve-month follow-up.

Typical site of service: Behavioral health or outpatient mental health settings where standardized depression screening instruments (PHQ-9 or PHQ-9M) are administered and documented for adolescents.

Clinical & Coding Specifications

Clinical Context

An adolescent patient, age 15, diagnosed with major depressive disorder (MDD) presents for a 12‑month follow‑up after initiation of psychotherapy and/or pharmacotherapy. The clinical workflow includes administration of a patient‑reported outcome measure — either the PHQ-9 or the youth version PHQ-9M — within a 60‑day window around the 12‑month mark. The billing metric M1020 applies when the adolescent has not achieved remission at twelve months, defined as a PHQ-9/PHQ-9M total score of 5 or greater, or when no PHQ-9/PHQ-9M score was obtained in the required timeframe.

Typical encounter steps:

Initial intake and documentation of baseline depression diagnosis and treatment plan.
Scheduled 12‑month visit with administration of PHQ-9 or PHQ-9M within +/−60 days of the anniversary of treatment start.
Scoring and documentation in the medical record. If the score is less than 5, remission is recorded and M1020 does not apply. If score is ≥5 or the measure is missing, M1020 applies and is documented with supporting notes on symptom persistence or reason for missing assessment.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	When the clinician provides substantially greater work than usual for a service billed separately (e.g., extended psychotherapy or complex medication management during the visit).
`23`	Unusual anesthesia	Rarely applicable for this behavioral health measure; include only if an unrelated unusual anesthesia event occurred during the encounter.
`52`	Reduced services	When a normally reported service is partially reduced or not completed (e.g., shortened psychotherapy visit documented).
`53`	Discontinued procedure	If the clinical encounter was started but discontinued for a clinical reason before completion.
`54`	Surgical care only	Not typically applicable; included when only surgical aspects of a related procedure are billed by one clinician.
`55`	Postoperative management only	Not typically applicable to ambulatory measurement-based care; used when postoperative care is billed separately.
`56`	Preoperative management only	Not typically applicable; use only if preoperative care is reported separately.
`62`	Two surgeons	Uncommon for this code; used when two surgeons share responsibility for a procedure in the same operative session.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery	Not applicable to measurement-based behavioral health services; included for completeness when advanced practice clinicians assist in procedures.
`CO`	Services related to CO poisoning	Use when the primary reason for visit relates to carbon monoxide poisoning; not typical for `M1020` but present in modifier list.
`CQ`	Service furnished by a physician or other qualified health care professional eligible for incentive payment under value‑based programs	Use when the clinician meets quality incentive criteria under applicable programs and the payer recognizes `CQ`.
`FX`	Professional component exempt	Use when the professional component is not billed because it is included elsewhere; rarely used in behavioral health measurement.
`FY`	Clinical trial, non‑physician practitioner	Use when services are part of a clinical trial and furnished by a non‑physician practitioner as defined by the payer.
`QX`	Ordering/Referring Physician Certification (modifier for DME)	Use when required to indicate the ordering/referring practitioner is not the same as the billing practitioner and payer requires this modifier for durable medical equipment; rarely relevant here.

Taxonomy Code	Specialty	Notes
2084P0800X	Child and Adolescent Psychiatry	Most common specialty managing major depressive disorder in adolescents.
208000000X	General Psychiatry	Manages medication and complex psychiatric comorbidity.
2084N0400X	Pediatric Behavioral Health Physician	Pediatricians with behavioral health focus who perform screening and management.
363L00000X	Clinical Social Worker	Provides psychotherapy and care coordination, often documents measurement outcomes.
367A00000X	Nurse Practitioner	Primary care and psychiatric NPs who administer `PHQ-9`/`PHQ-9M` and manage treatment plans.

ICD-10 Code	Description	Clinical Relevance
`F32.0`	Mild depressive episode	Represents a depressive episode in adolescents where measurement-based monitoring with `PHQ-9`/`PHQ-9M` is appropriate to assess remission.
`F32.1`	Moderate depressive episode	Common diagnosis prompting systematic follow‑up at 12 months to evaluate treatment response and remission status.
`F32.2`	Severe depressive episode without psychotic symptoms	Requires close monitoring; persistent symptoms at 12 months are captured by `M1020`.
`F34.1`	Dysthymia (persistent depressive disorder)	Chronic depressive disorder often monitored longitudinally with standardized scales; failure to remit at 12 months is captured by `M1020`.
`F33.1`	Major depressive disorder, recurrent, moderate	Recurrent depression cases commonly require ongoing measurement and are relevant when remission is not achieved after 12 months.

CPT Code	Description	Relationship to This Procedure
`96127`	Brief emotional/behavioral assessment with scoring and documentation (e.g., depression inventory)	Often used for administration and scoring of standardized depression screens such as the `PHQ-9`/`PHQ-9M` in primary care or behavioral health visits; can be billed alongside evaluation and management when supported by documentation.
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, low to moderate complexity (typically 15 minutes)	Common E/M visit code for a 12‑month follow‑up where depression assessment, medication management, and treatment planning are documented.
`99214`	Office or other outpatient visit for the evaluation and management of an established patient, moderate to high complexity (typically 25 minutes)	Used for more complex medication adjustments or comorbid condition management during the 12‑month follow‑up.
`90834`	Psychotherapy, 45 minutes with patient	Used when psychotherapy is provided as part of the visit and documented separately from the measurement activity.
`99406`	Smoking and tobacco use cessation counseling, intermediate, 3–10 minutes	Example of a brief counseling service that may be provided alongside depression care when applicable; included as a commonly paired preventive counseling CPT.

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