HH

HCPCS Level II modifier that may be used with CPT or HCPCS Level II codes indicating a mental health/substance abuse program. This modifier may be required for state Medicaid programs, so check with your state guidelines.

HI

1. HCPCS Level II modifier that may be used with CPT or HCPCS Level II codes indicating an integrated mental health and mental retardation/developmentally disabled program. This modifier may be required for state Medicaid programs, so check with your state guidelines. 2. Medicare Part A; see hospital insurance .

HIAA

Abbreviation for Health Insurance Association of America, which is now known as America’s Health Insurance Plans (AHIP) . See America’s Health Insurance Plans (AHIP) .

Hidden Reserve

Under English Law Insurance companies are allowed to hold reserves that do not appear in their published accounts which may, for example, show their investments at less than their true value.

Hierarchy

Numerical order of diagnostic codes in which each digit beyond three digits adds information. See Box H-3 .Box H-3ALPHANUMERICAL CODES FOR ICD-10-CMFRACTURE OF UPPER LIMB (810-819)810 Fracture of clavicleIncludes: collar boneinterligamentous part of clavicleThe following fifth-digit subclassification is for use with category 810:0 unspecified partClavicle NOS1 sternal end of clavicle2 shaft of clavicle3 acromial end of clavicle 810.0ICD-10-CMS42.00 Closed fracture of clavicleS42.001 Closed fracture of right clavicleS42.002 Closed fracture of left clavicleS42.009 Closed fracture of clavicle, unspecified side