Rating Ledger

Methodology and sources

Every number on Rating Ledger is read from a published federal source, stored with that source and the date it was checked, and computed by one engine (/js/vamath.js) used both to build the pages and in the calculator.

Sources

DataSourceChecked
Combined ratings table and roundingeCFR, 38 CFR 4.25 Combined ratings table2026-10-20
Bilateral factoreCFR, 38 CFR 4.26 Bilateral factor2026-10-20
TDIU thresholdseCFR, 38 CFR 4.16 Total disability ratings based on unemployability2026-10-20
Worked combining examplesVA, About VA disability ratings and the examples in 4.25 and 4.262026-10-20
Monthly rates, effective December 1, 2025VA, Current Veterans disability compensation rates2026-10-20
Previous rates, effective December 1, 2024VA, Past rates: 2025 Veterans disability compensation rates2026-10-20
School-age child rule38 U.S.C. 11152026-10-20
Criteria, schedule of ratings, eareCFR, 38 CFR 4.87 Schedule of ratings, ear2026-10-20
Criteria, schedule of ratings, mental disorderseCFR, 38 CFR 4.130 Schedule of ratings, mental disorders2026-10-20
Criteria, schedule of ratings, musculoskeletal systemeCFR, 38 CFR 4.71a Schedule of ratings, musculoskeletal system2026-10-20
Criteria, schedule of ratings, neurological conditions and convulsive disorderseCFR, 38 CFR 4.124a Schedule of ratings, neurological conditions and convulsive disorders2026-10-20
Criteria, schedule of ratings, respiratory systemeCFR, 38 CFR 4.97 Schedule of ratings, respiratory system2026-10-20
Criteria, schedule of ratings, cardiovascular systemeCFR, 38 CFR 4.104 Schedule of ratings, cardiovascular system2026-10-20
Criteria, schedule of ratings, digestive systemeCFR, 38 CFR 4.114 Schedule of ratings, digestive system2026-10-20
Criteria, schedule of ratings, skineCFR, 38 CFR 4.118 Schedule of ratings, skin2026-10-20
Criteria, schedule of ratings, endocrine systemeCFR, 38 CFR 4.119 Schedule of ratings, endocrine system2026-10-20
Criteria, ratings of the genitourinary system, diagnoseseCFR, 38 CFR 4.115b Ratings of the genitourinary system, diagnoses2026-10-20
Criteria, schedule of ratings, dental and oral conditionseCFR, 38 CFR 4.150 Schedule of ratings, dental and oral conditions2026-10-20
Free help and fee rulesVA, VA accredited representative FAQs; 38 U.S.C. 59012026-10-20
Filing a claim or increaseVA, How to file a VA disability claim2026-10-20

Method

Combining. Each Table I cell equals the first value plus the second rating's share of the remaining efficiency, rounded to the nearest whole number with .5 going up: value = a + b × (100 − a) ÷ 100. This reproduces every Table I cell checked against the regulation (rows 19, 50, 60, 65, 70 and 94, all nine columns). Ratings are combined from the most severe down; the exact value is carried between steps and converted to the nearest 10 once, with values ending in 5 going up.

Bilateral factor. Ratings marked on the left and right of the same pair of limbs are combined, 10% of that value is added and the result is rounded to a whole number, as in the regulation's example (19 + 1.9 = 20.9, used as 21). With both arms and both legs rated, all four sides form one group. The engine also tries leaving ratings out of the group and keeps that result only if it gives a higher rating, per 4.26(d).

Pay. The basic rate is the VA table row for the spouse, dependent parents and whether there is a child under 18. Each further child under 18, each child 18 to 23 in school and a spouse on Aid and Attendance adds the published added amount. Following 38 U.S.C. 1115(1)(F), a child over 18 in school is paid the school amount on account of that child and does not also select a "with child" row. At 10% and 20% the flat rate applies.

Tests. npm test reproduces the 38 CFR 4.25 examples (50 and 30 to 70; 40 and 20 to 50; 60, 40 and 20 to 80), the 4.26 bilateral example (60, 20 and two bilateral 10s to 70), VA's "two 10% ratings make 19%" and its 50, 30 and 10 example, every Table I cell above, both of VA's pay examples ($617.47 and $2,367.45), the statutory rounding of the child amounts, and checks that every record carries an https source and a checked date.

Condition criteria

The criteria on each condition page are close summaries of the regulation text, keeping its numbers, degrees and thresholds. eCFR showed Title 38 up to date as of 10/16/2026 when read. The regulation's wording governs; each page links to it.

Left out, and gaps