HCPCS Code M1194

Documentation of medical reason(s) surgical pathology reports did not contain impression or conclusion of or recommendation for testing of mmr by immunohistochemistry, msi by dna-based testing status, or both tests were not included (e.g., patient will not be treated with checkpoint inhibitor therapy, no residual carcinoma is present in the sample [tissue exhausted or status post neoadjuvant treatment], insufficient tumor for testing)
Code effective Jan 01, 2023

HCPCS Section
Medical services

M1194 is a valid 2026 HCPCS code meaning Documentation of medical reason(s) surgical pathology reports did not contain impression or conclusion of or recommendation for testing of mmr by immunohistochemistry, msi by dna-based testing status, or both tests were not included (e.g., patient will not be treated with checkpoint inhibitor therapy, no residual carcinoma is present in the sample [tissue exhausted or status post neoadjuvant treatment], insufficient tumor for testing) or (Med rsn no imp/con mmr/msi) for short. HCPCS M1194 has been effective since 01/01/2023 and applies to Medical care.

HCPCS Code Details - M1194
HCPCS Level II Code Section M - Medical services
HCPCS Code	`M1194`
Description	Long description: Documentation of medical reason(s) surgical pathology reports did not contain impression or conclusion of or recommendation for testing of mmr by immunohistochemistry, msi by dna-based testing status, or both tests were not included (e.g., patient will not be treated with checkpoint inhibitor therapy, no residual carcinoma is present in the sample [tissue exhausted or status post neoadjuvant treatment], insufficient tumor for testing) Short description: Med rsn no imp/con mmr/msi
HCPCS Pricing indicator	`00` - Physician Fee Schedule And Non-Physician Practitioners - Service not separately priced by part B (e.g., services not covered, bundled, used by Part A only, etc.)
Multiple pricing indicator	`9` - Not applicable as HCPCS not priced separately by part B or value is not established
Coverage code	`C` - Carrier judgment
BETOS² code	`Z2` - Undefined codes
HCPCS Action code	`N` - No maintenance for this code
Type of service	`1` - Medical care
Effective date	Effective Jan 01, 2023
Date added	Added Jan 01, 2023

HCPCS M1193 · Surgical pathology reports that contain impression or conclusion of or recommendation for testing of mmr by immunohistochemistry, msi by dna-based testing status, or both
HCPCS G0028 · Documentation of medical reason(s) for not screening for tobacco use (e.g., limited life expectancy, other medical reason)
HCPCS G2093 · Documentation of medical reason(s) for not prescribing ace inhibitor or arb or arni therapy (e.g., hypotensive patients who are at immediate risk of cardiogenic shock, hospitalized patients who have experienced marked azotemia, allergy, intolerance, other medical reasons)
HCPCS G2128 · Documentation of medical reason(s) for not on a daily aspirin or other antiplatelet (e.g. history of gastrointestinal bleed, intra-cranial bleed, blood disorders, idiopathic thrombocytopenic purpura (itp), gastric bypass or documentation of active anticoagulant use during the measurement period)
HCPCS G2149 · Documentation of medical reason(s) for not using multimodal pain management (e.g., allergy to multiple classes of analgesics, intubated patient, hepatic failure, patient reports no pain during pacu stay, other medical reason(s))
HCPCS G2198 · Documentation of medical reason(s) for not screening for unhealthy alcohol use using a systematic screening method (e.g., limited life expectancy, other medical reasons)
HCPCS G2201 · Documentation of medical reason(s) for not providing brief counseling (e.g., limited life expectancy, other medical reasons)
HCPCS G2203 · Documentation of medical reason(s) for not providing brief counseling if identified as an unhealthy alcohol user (e.g., limited life expectancy, other medical reasons)
HCPCS G8705 · Documentation of medical reason(s) for not performing a 12-lead electrocardiogram (ecg)
HCPCS G8722 · Documentation of medical reason(s) for not including the pt category, the pn category or the histologic grade in the pathology report (e.g., re-excision without residual tumor; non-carcinomasanal canal)
HCPCS G8768 · Documentation of medical reason(s) for not performing lipid profile (e.g., patients with palliative goals or for whom treatment of hypertension with standard treatment goals is not clinically appropriate)
HCPCS G8772 · Documentation of medical reason(s) for not performing urine protein test (e.g., patients with palliative goals or for whom treatment of hypertension with standard treatment goals is not cllinically appropriate)
HCPCS G8775 · Documentation of medical reason(s) for not performing serum creatinine test (e.g., patients with palliative goals or for whom treatment of hypertension with standard treatment goals is not clinically appropriate)
HCPCS G8778 · Documentation of medical reason(s) for not performing diabetes screening test (e.g., patients with a diagnosis of diabetes, or with palliative goals or for whom treatment of hypertension with standard treatment goals is not clinically appropriate)
HCPCS G8781 · Documentation of medical reason(s) for patient not receiving counseling for diet and physical activity (e.g., patients with palliative goals or for whom treatment of hypertension with standard treatment goals is not clinically appropriate)
HCPCS G8865 · Documentation of medical reason(s) for not administering or previously receiving pneumococcal vaccine (e.g., patient allergic reaction, potential adverse drug reaction)
HCPCS M1195 · Surgical pathology reports that do not contain impression or conclusion of or recommendation for testing of mmr by immunohistochemistry, msi by dna-based testing status, or both, reason not given

¹ Two-digit numeric codes are Level I code modifiers copyrighted© by the American Medical Association's Current Procedural Terminology (CPT).

² BETOS stands for “Berenson-Eggers Type Of Service”

HCPCS Level II codes and descriptors are approved and maintained jointly by the alpha-numeric editorial panel (consisting of CMS, the Health Insurance Association of America, and the Blue Cross and Blue Shield Association). — Updated 6/23/2026

HCPCS Code M1194

HCPCS Code Details - M1194

See also

HCPCS M1193 · Surgical pathology reports that contain impression or conclusion of or recommendation for testing of mmr by immunohistochemistry, msi by dna-based testing status, or both

HCPCS G0028 · Documentation of medical reason(s) for not screening for tobacco use (e.g., limited life expectancy, other medical reason)

HCPCS G2093 · Documentation of medical reason(s) for not prescribing ace inhibitor or arb or arni therapy (e.g., hypotensive patients who are at immediate risk of cardiogenic shock, hospitalized patients who have experienced marked azotemia, allergy, intolerance, other medical reasons)

HCPCS G2149 · Documentation of medical reason(s) for not using multimodal pain management (e.g., allergy to multiple classes of analgesics, intubated patient, hepatic failure, patient reports no pain during pacu stay, other medical reason(s))

HCPCS G2198 · Documentation of medical reason(s) for not screening for unhealthy alcohol use using a systematic screening method (e.g., limited life expectancy, other medical reasons)

HCPCS G2201 · Documentation of medical reason(s) for not providing brief counseling (e.g., limited life expectancy, other medical reasons)

HCPCS G2203 · Documentation of medical reason(s) for not providing brief counseling if identified as an unhealthy alcohol user (e.g., limited life expectancy, other medical reasons)

HCPCS G8705 · Documentation of medical reason(s) for not performing a 12-lead electrocardiogram (ecg)

HCPCS G8722 · Documentation of medical reason(s) for not including the pt category, the pn category or the histologic grade in the pathology report (e.g., re-excision without residual tumor; non-carcinomasanal canal)

HCPCS G8768 · Documentation of medical reason(s) for not performing lipid profile (e.g., patients with palliative goals or for whom treatment of hypertension with standard treatment goals is not clinically appropriate)

HCPCS G8772 · Documentation of medical reason(s) for not performing urine protein test (e.g., patients with palliative goals or for whom treatment of hypertension with standard treatment goals is not cllinically appropriate)

HCPCS G8775 · Documentation of medical reason(s) for not performing serum creatinine test (e.g., patients with palliative goals or for whom treatment of hypertension with standard treatment goals is not clinically appropriate)

HCPCS G8778 · Documentation of medical reason(s) for not performing diabetes screening test (e.g., patients with a diagnosis of diabetes, or with palliative goals or for whom treatment of hypertension with standard treatment goals is not clinically appropriate)

HCPCS G8781 · Documentation of medical reason(s) for patient not receiving counseling for diet and physical activity (e.g., patients with palliative goals or for whom treatment of hypertension with standard treatment goals is not clinically appropriate)

HCPCS G8865 · Documentation of medical reason(s) for not administering or previously receiving pneumococcal vaccine (e.g., patient allergic reaction, potential adverse drug reaction)

HCPCS M1195 · Surgical pathology reports that do not contain impression or conclusion of or recommendation for testing of mmr by immunohistochemistry, msi by dna-based testing status, or both, reason not given