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HCPCS Level II M1490: Patient Status Not Documented

HCPCS Level II code M1490 denotes instances where a patient’s status is not documented in the medical record. As an administrative documentation indicator, the code signals a gap in recorded patient information rather than a clinical procedure or treatment. Nationally, documentation-status codes matter because they affect claims processing, medical record completeness, and downstream coding and quality measurement.

Key payers in scope include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. Readers will find a concise breakdown of what M1490 represents, typical use cases across care settings, and the implications for billing and administrative workflows. The publication outlines benchmarks and patterns where available, notes policy or coverage considerations relevant to documentation indicators, and summarizes clinical-context situations in which documentation-status coding may appear.

Where specific payer policies or data are not available in the input, the report flags that information as not provided. The goal is to clarify the purpose of HCPCS Level II code M1490, its national relevance to claims and records management, and the types of operational issues organizations should recognize when encountering undocumented patient status on claims.

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Billing Code Overview

HCPCS Level II code M1490 is used when patient status is not documented in the medical record. The code denotes a lack of recorded information about the patient’s status at the time of service, which relates to administrative documentation rather than a specific clinical procedure.

Service type: Administrative/documentation indicator
Typical site of service: Documentation applies across all settings where patient status is recorded (inpatient, outpatient, clinic, home health) — use depends on the encounter context

Data not available in the input.

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HCPCS Level II M1490: Patient Status Not Documented

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Sign up for hcpcs M1490 policy alerts

Get alerted when payer policies referencing M1490 are released or updated.

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Receive email alerts as soon as relevant payer policies are published or updated.

Billing Code Overview

Service type: Administrative/documentation indicator
Typical site of service: Documentation applies across all settings where patient status is recorded (inpatient, outpatient, clinic, home health) — use depends on the encounter context

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

Billing code M1490 is used when a patient’s status is not documented in the medical record for the furnished service. A typical scenario: An adult patient presents to an outpatient clinic for management of a chronic condition (for example, hypertension follow-up). The visit is completed, orders and medications are updated, but the clinician forgets to record the patient’s status (e.g., new vs. established, or homebound status when relevant for home health) required for billing under the specific HCPCS Level II reporting. The medical coder reviewing the chart identifies the missing patient status and assigns M1490 to indicate the absence of documented patient status. Workflow: the clinician documents the encounter; coding staff review chart completeness; if the required status field is missing and cannot be clarified within documentation timelines, M1490 is assigned on the claim to denote “Patient status not documented.” This code is administrative and does not describe a clinical procedure; it flags documentation deficiency for auditing and billing purposes.

Coding Specifications

Modifier	Description	When to Use
`25`	Significant, separately identifiable E/M service by the same physician on the same day of the procedure	Use when an evaluation/management visit distinct from the procedure is documented the same day

59 | Distinct procedural service | Use when two procedures/services are unrelated and should be billed separately

26 | Professional component | Use when billing only the professional component of a service

TC | Technical component | Use when billing only the technical component of a service

GA | Waiver of liability statement on file (patient signature on file) | Use when patient signed an ABN or similar and the provider has documented it

GZ | Item or service expected to be denied as not reasonable and necessary (no ABN on file) | Use when service likely not covered and no ABN is on file

GP | Services performed by a physical therapist | Use to indicate PT services when applicable

QW | CLIA waived test performed in physician office | Use for point-of-care waived laboratory testing

KX | Requirements specified in the medical policy have been met | Use when medical necessity criteria are met and need attestation

59X | Modifier 59 variants (e.g., XS, XE) — distinct service specific | Use the appropriate 59 variant per NCCI guidance when separation is needed

Taxonomy Code	Specialty	Notes
`207Q00000X`	Family Medicine	Commonly documents and bills outpatient visits where status may be omitted

207R00000X | Internal Medicine | Manages chronic conditions in ambulatory settings where this code may be applied

363LF0000X | Ambulatory/Outpatient Clinic | Clinics that submit administrative HCPCS codes for documentation issues

208D00000X | Pediatrics | Pediatric outpatient clinicians may encounter documentation gaps requiring administrative codes

207L00000X | Emergency Medicine | ED settings where rapid throughput can lead to missing patient status entries

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`Data not available in the input.`	Data not available in the input.	Data not available in the input.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Often the primary E/M code billed for a routine outpatient visit where patient status should be documented

99214 | Office or other outpatient visit for the evaluation and management of an established patient, typically 25 minutes | Used for more complex outpatient visits where documentation completeness, including patient status, is required

99341 | Home visit for an established patient, new problem | Home-based visits require clear patient status (e.g., homebound) for appropriate billing; absence of status may trigger M1490

99499 | Unlisted evaluation and management service | Used rarely when a visit does not fit standard E/M categories; documentation must include patient status for proper credentialing

G0402 | Initial preventive physical examination; face-to-face visit | Preventive services require specific documentation elements, including patient status, and may be reviewed alongside administrative codes like M1490

HCPCS Level II M1252: Ambulatory Palliative Care Patient Experience Survey Noncompletion

HCPCS-LEVEL-II-M1255-POSITIVE-PREGNANCY-TEST-NON-OB-VISIT

HCPCS Level II M1255: Positive Pregnancy Test During Non-Obstetric Clinic Visit

HCPCS-LEVEL-II-M1278-ELEVATED-BLOOD-PRESSURE-WITH-DOCUMENTED-FOLLOW-UP

HCPCS Level II M1278: Elevated Blood Pressure with Documented Follow-Up

HCPCS-LEVEL-II-M1292-FRAILTY-WITH-ADVANCED-ILLNESS-66-PLUS

HCPCS Level II M1292: Frailty with Advanced Illness in Patients 66+

HCPCS-LEVEL-II-M1300-INFLUENZA-IMMUNIZATION-NOT-ADMINISTERED

HCPCS Level II M1300: Influenza Immunization Not Administered

HCPCS-LEVEL-II-M1326-HYPOTONY-EVALUATION-MANAGEMENT

HCPCS Level II M1326: Patients with Diagnosis of Hypotony

HCPCS-LEVEL-II-M1356-PATIENTS-WHO-DIED-DURING-MEASUREMENT-PERIOD

HCPCS Level II M1356: Patients Who Died During the Measurement Period

HCPCS-LEVEL-II-M1375-RA-ADDITIONAL-ENCOUNTER-90-DAYS

HCPCS Level II M1375: Additional Rheumatoid Arthritis Encounter

HCPCS-LEVEL-II-M1384-PATIENTS-DIED-PERFORMANCE-PERIOD

HCPCS Level II M1384: Patients Who Died During Performance Period

HCPCS-LEVEL-II-M1503-VASCULAR-SURGERY-MIPS-VALUE-PATHWAY

HCPCS Level II M1503: Vascular Surgery MIPS Value Pathway

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Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

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Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`25`	Significant, separately identifiable E/M service by the same physician on the same day of the procedure	Use when an evaluation/management visit distinct from the procedure is documented the same day